Fill in the gaps. Use the appropriate forms of the word in brackets when given.
1 If Bill (know) about the fun run, he would have joined the race.
2 It is Candice raised the most money for charity holding a fundraiser.
3 I like to help, but I have a headache and I think it’s getting (bad).
4 I wish there (be) more cycle lanes in town because I enjoy (ride) my bicycle.
5 The animals live in the rainforest will suffer we do not stop cutting down trees.

1. If Bill had known about the fun run, he would have joined the race.

Explanation: The sentence is in the past unreal conditional form. This means that the condition (Bill knowing about the fun run) did not happen in the past, so the result (him joining the race) also did not happen. We use the past perfect tense "had known" to indicate the unreal condition.

2. It is Candice who raised the most money for charity by holding a fundraiser.

Explanation: The sentence is stating a fact that Candice raised the most money for charity. We use the relative pronoun "who" to introduce the additional information about Candice. The verb "raised" is in the past tense to indicate an action completed in the past.

3. I like to help, but I have a headache and I think it’s getting worse.

Explanation: The sentence describes a situation where the speaker wants to help but cannot because they have a headache. We use the present progressive form "getting worse" to indicate an ongoing action of the headache becoming more severe.

4. I wish there were more cycle lanes in town because I enjoy riding my bicycle.

Explanation: The sentence expresses a wish or desire for more cycle lanes in town. We use the past subjunctive form "were" to indicate an imaginary or unreal situation. The verb "enjoy" is in the present tense to show a general truth or habitual action.

5. The animals that live in the rainforest will suffer if we do not stop cutting down trees.

Explanation: The sentence describes a cause and effect relationship. If we do not stop cutting down trees, the animals living in the rainforest will suffer. We use the present tense "do not stop" to indicate an ongoing action. The verb "live" is in the present tense to show a general truth or habitual action.