【推荐1】—Have you decided to take up teaching as career after graduation?
—I ________ go abroad for further education instead. But I haven’t made up my mind yet.

A．must

B．should

C．may

D．shall

【推荐2】Everyone ________ show their health code before entering the hospital.

A．must

B．can

C．may

D．need

【推荐3】—Who is singing next door? It sounds like a young girl’s voice.
—It ________ be Jane. She likes singing English songs very much.

A．need

B．must

C．may

D．can

【推荐1】— Li Lei, hurry up! The bus is coming!
— Oh, no. We ________ cross the street until the traffic lights turn green.

A．mustn’t

B．may not

C．needn’t

D．couldn’t

【推荐2】Polluted air does harm to the living things on the earth. It ______ kill plants as well as even humans.

A．can

B．should

C．must

D．need

【推荐3】Three thousand yuan for such a blouse! You ________ be joking.

A．can

B．may

C．must

D．need

【推荐1】—Would you like to come to my birthday party tonight?
—Sorry, I ________. I have to visit my sick grandma.

A．can’t

B．mustn’t

C．needn’t

D．shouldn’t

【推荐2】—William, I’m afraid we can’t complete the model spaceship this afternoon.
—Well, we ________ finish it today. It’s fine if we give it to Mr. Wang tomorrow.

A．can’t

B．mustn’t

C．shouldn’t

D．needn’t

【推荐3】—May I sleep with my pet dog, Mum?
—No, you ________, my dear. It is bad for your health.

A．shouldn’t

B．mustn’t

C．needn’t

D．won’t

【推荐1】—Wait a minute. I’ll take an umbrella, for it’s raining.
—Hurry up, or we miss the beginning of the film.

A．should

B．must

C．may

D．have to

【推荐2】– There’s somebody at the door. Who ____ it be? Is it the postman?
-- No. It ______ be him. It’s just seven o’clock. It’s too early.

A．must, may not

B．will, won’t

C．may, mustn’t

D．may, can’t

【推荐3】—Sam, what present will you give your mother for her coming birthday?
—I haven’t decided yet. I ________ make her a birthday cake by myself.

A．must

B．may

C．would

D．should