Exercise 2. Complete the following sentences with the Present Simple or the Future Simple of the verbs in brackets. I ………. (tell) you a secret on condition that you ………. (not tell) anyone else.
When I ………. (see) him I ………. (give) him your message.
We ………. (go) to bed as soon as the programme ………. (finish).
I ………. (lend) you the book as long as you ……….. (bring) it back on Monday.
If the weather ………. (be) nice tomorrow, we ………. (go) sailing.
He ………. (not do) anything until he ………. (hear) from us.
The door ………. (not open) unless you ………. (push) it hard.
If Mr. Smith ………. (not come back), he ………. (phone) you.
Even if it (rain), we ………. still (go) for a picnic.
I0. I ………. (call off) the sale unless you ………. (agree) to pay me the whole amount in cash.
If Brian ………. (get) a new computer, he ………. (forget) about all his studies.
We ………. (have) to find somebody else in case Bill ………. (refuse) to do the work.
We ………. (have) the meeting this week, provided no one ………. (object).
The doctor ………. (not see) you unless it ………. (be) an emergency.
I ………. (get) in touch with him as soon as he ………. (come back) from London.
Unless we ………. (pay) the phone bill today, they ………. (cut off) the phone.
If all ………. (go) well, it ………. (take) me about half an hour.
The dog ………. (not bite) you unless you ………. (tease) it.
I ………. (put down) your address now in case I ………. (not see) you again.
If you (pay) cash I (give) you a five per cent discount.

Exercise 2:

1. I will tell you a secret on condition that you do not tell anyone else.
Explanation: The verb "tell" is in the future simple tense because it denotes a future action. The verb "not tell" is in the present simple tense because it refers to a general truth or habitual action.

2. When I see him, I will give him your message.
Explanation: The verb "see" is in the present simple tense because it refers to a habitual action. The verb "give" is in the future simple tense because it denotes a future action.

3. We will go to bed as soon as the programme finishes.
Explanation: Both verbs "go" and "finish" are in the present simple tense because they refer to habitual actions.

4. I will lend you the book as long as you bring it back on Monday.
Explanation: The verb "lend" is in the future simple tense because it denotes a future action. The verb "bring" is in the present simple tense because it refers to a habitual action.

5. If the weather is nice tomorrow, we will go sailing.
Explanation: Both verbs "be" and "go" are in the present simple tense because they refer to general truths or habitual actions.

6. He will not do anything until he hears from us.
Explanation: The verb "do" is in the future simple tense because it denotes a future action. The verb "hear" is in the present simple tense because it refers to a habitual action.

7. The door will not open unless you push it hard.
Explanation: The verb "open" is in the present simple tense because it refers to a general truth or habitual action. The verb "push" is also in the present simple tense because it refers to a habitual action.

8. If Mr. Smith does not come back, he will phone you.
Explanation: Both verbs "come" and "phone" are in the present simple tense because they refer to habitual actions.

9. Even if it rains, we will still go for a picnic.
Explanation: Both verbs "rain" and "go" are in the present simple tense because they refer to general truths or habitual actions.

10. I will call off the sale unless you agree to pay me the whole amount in cash.
Explanation: The verb "call off" is in the future simple tense because it denotes a future action. The verb "agree" is in the present simple tense because it refers to a general truth or habitual action.

11. If Brian gets a new computer, he will forget about all his studies.
Explanation: Both verbs "get" and "forget" are in the present simple tense because they refer to habitual actions.

12. We will have to find somebody else in case Bill refuses to do the work.
Explanation: The verb "have" is in the future simple tense because it denotes a future action. The verb "refuse" is in the present simple tense because it refers to a general truth or habitual action.

13. We will have the meeting this week, provided no one objects.
Explanation: The verb "have" is in the future simple tense because it denotes a future action. The verb "object" is in the present simple tense because it refers to a general truth or habitual action.

14. The doctor will not see you unless it is an emergency.
Explanation: The verb "see" is in the present simple tense because it refers to a general truth or habitual action. The verb "is" is also in the present simple tense because it refers to a general truth.

15. I will get in touch with him as soon as he comes back from London.
Explanation: The verb "get" is in the future simple tense because it denotes a future action. The verb "come" is in the present simple tense because it refers to a habitual action.

16. Unless we pay the phone bill today, they will cut off the phone.
Explanation: The verb "pay" is in the present simple tense because it refers to a general truth or habitual action. The verb "cut off" is also in the present simple tense because it refers to a general truth or habitual action.

17. If all goes well, it will take me about half an hour.
Explanation: Both verbs "go" and "take" are in the present simple tense because they refer to general truths or habitual actions.

18. The dog will not bite you unless you tease it.
Explanation: The verb "bite" is in the present simple tense because it refers to a general truth or habitual action. The verb "tease" is also in the present simple tense because it refers to a general truth or habitual action.

19. I will put down your address now in case I do not see you again.
Explanation: The verb "put down" is in the future simple tense because it denotes a future action. The verb "see" is in the present simple tense because it refers to a general truth or habitual action.

20. If you pay cash, I will give you a five per cent discount.
Explanation: Both verbs "pay" and "give" are in the present simple tense because they refer to general truths or habitual actions.