【推荐1】I'm sure your parents ________ be proud of the good things you have done.

A．must

B．might

C．can't

D．may

【推荐2】— Can you come to my party tomorrow afternoon?
— Sorry, I can’t. I ________ study for an exam.

A．can

B．may

C．must

【推荐3】—Jill, ________ run in the hallways. It’s dangerous.
—Oh, sorry, Ms. Clark.

A．let’s

B．don’t

C．isn’t

D．must

【推荐1】—What kind of house do you want to have? Something big?
—Well, it _______ be big. That’s not important.

A．mustn’t

B．can’t

C．needn’t

D．won’t

【推荐2】Don’t open your present now! In China, you ________ wait and open it later.

A．can

B．can’t

C．must

D．mustn’t

【推荐3】—I think the dress is made in France. I like it so much!
—It ________ be from foreign countries. Look! It says “Made in China”.

A．must

B．mustn’t

C．could

D．can’t

【推荐1】—Is this book Mary’s?
—It ________ be hers because her name is on it.

A．must

B．can’t

C．may

【推荐2】—There ________ be some interesting experiments in the second live class from the China’s space station.
—Of course. Teenagers in our country like to watch them very much.

A．need

B．must

C．can’t

【推荐3】— How beautiful the paper cutting is! Who made it?
— It ________ be Linda. She’s the only one that can make it in our class.

A．could

B．can

C．may

D．must