— The socks must be Linda’s.— No, they         be. They’re too small for her.

—_______ I take the newspaper away, please ?—No, you mustn’t. You _______ only read it here.

—Must I finish the book today?—Yes, you ________, but you ________ finish it now. Have a rest.

---.Look! It _____be your uncle .----It_____ be him . He has gone to Xi’an.

---Is John coming by train?    ---He should, but he ________ not. He likes driving his car.

Is that your best friend Kitty?— No, it _________ be her. She flew to Singapore yesterday.

 －Is Mr. Li in his office ?－No, he __________ in the office. He’s ill in hospital.

 –May I take these books out of the reading room?-- No, you _________.

─ Look, Stella is there!─ That ______ be her. She doesn’t like singing.

—Must I clean my room now, Mum?—_______. You can do it tomorrow.

--- Can you make a kite for me?--- Sorry, I _____.

 — _________ I use your telephone?— Yes, of course.

 — Mum, must I wash the dishes right now?— No, you ______.

You ______ be hungry already—you had lunch only two hours ago!

----Must he finish the work before supper?----No, he        . He         finish it after supper.

—Boys and girls, we will have a class trip to Taixing Park next week.—Great! It must be ______. I simply can’t wait _____ it.

You had better ________some food and drinks before the field trip ________.

You ________ play with the knife. You ________hurt yourself.

You had better _________ wine because you have to drive back home.

Li Lei can’t go hiking with us today,because he       take care of his sick mother.