Choose the right verb forms to complete the sentences.

Choose the correct option.

Don't call her at 7 pm! She [might having|might be having|might be] dinner at this time.

You [may have cleaned|might have cleaned|may clean] the house! You were at home all day and did nothing at all.

[May|Might|May not] you solve all the problems in your life!

William [may buy|may have bought|might buy] this beautiful house if he had enough money.