4. Complete the sentences with the correct modal perfect. 1. How sweet! You needn't / couldn't have bought anything for me. 2. Ben looks great! He should / must have lost a lot of weight. 3. If you wanted perfection, you may / ought to have hired a different actress. 4. Hey, there's Shaun! It looks like he might / would have met someone new.

Complete the sentences with the correct modal perfect.

1. How sweet! You needn't have bought anything for me.
2. Ben looks great! He must have lost a lot of weight.
3. If you wanted perfection, you ought to have hired a different actress.
4. Hey, there's Shaun! It looks like he might have met someone new.

Explanation: 1. Needn't have is used to say that someone did something that was not necessary. 2. Must have is used to express a strong belief or certainty about something in the past. 3. Ought to have is used to express regret or criticism about a past action that did not happen or should have been different. 4. Might have is used to express a possibility in the past.