надо
Task 2. Complete the second conditional sentences.
1. I (rejoice) if my children (do) well at school.
2. He (undertake) any business, if he (to be) well asked about it.
3. The state (protect) if it (have) a strong army.
4. Water (can) cause people to become infected if it (to be) infected with pathogenic bacteria, such as cholera or typhoid fever.
5. Mom explained that if the sun (set), then night (come).
6. I (buy) my mother a better present if you (add) some money to me.
7. If you (tell) me the truth, then I (cancel) the punishment.
8. Even if you (come), I (talk) to you. (negative sentence)
9. If every day (to be) the same, life (become) boring.
10. I (have) time to write an essay if I (start) right now.