Verbs in negative and conditional sentences

In each pair, choose the sentence that shows correct use of verbs in a negative or conditional sentence.

For help with this exercise, see Negative verb forms and Verbs in conditional sentences.

Example

1 of 5

Question

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◯ If the science fiction festival starts Monday, we wouldn’t need to plan entertainment for our visitors.
◯ If the science fiction festival started Monday, we wouldn’t need to plan entertainment for our visitors.
Verbs in negative and conditional sentences – 1

2 of 5

Question

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◯ If everyone had voted in the last election, the results would have been very different.
◯ If everyone has voted in the last election, the results would have been very different.
Verbs in negative and conditional sentences – 2

3 of 5

Question

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◯ The tenants will not pay the rent unless the landlord fixes the furnace.
◯ The tenants will not pay the rent unless the landlord will fix the furnace.
Verbs in negative and conditional sentences – 3

4 of 5

Question

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◯ When dark gray clouds appeared on a hot summer afternoon, a thunderstorm often follows.
◯ When dark gray clouds appear on a hot summer afternoon, a thunderstorm often follows.
Verbs in negative and conditional sentences – 4

5 of 5

Question

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◯ Rosalie should have not offered to volunteer at the shelter on school nights.
◯ Rosalie should not have offered to volunteer at the shelter on school nights.
Verbs in negative and conditional sentences – 5