Exercise 33.1: Must or should

Fill in the blank with must or should.

Example: I don't think he ____ go to school today.
Answer: I don't think he should go to school today.

1. We've been so busy lately! We ____ hire a new sales assistant.

2. You think I'm going to buy that? You ____ be joking.

3. I was stupid to buy that ring. I ____ have realized it was a fake.

4. It was a mistake to hire that thief. The manager ____ be feeling terrible right now.

5. I know I ____n't buy this shirt, but I'm going to.

Unit 33