---Fifty dollars for such a T-shirt! You _______ be joking!---I’m serious．It’s made of silk.

---Who’s the woman in red ? Is it Mrs. White?---It          be her. She went to Beijing yesterday.

— It seems that Mr. Wu is standing there.— It ______ be him because he called me from Canada just now.

The new law says that people_______ drive after drinking wine.

—Look! Is that Mr. Green?—It          be Mr. Green. He has gone to Shanghai.

People ______ drive after drinking wine or beer according to the new laws. 

Some frightening pets _________ be kept home so that they won’t hurt others.

 My grandparents never remember my telephone number, and they always _______ look it up.

____ he _____ get up early?

—Could I keep this book for another week?—Of course you        .

—Must I park my car behind the cinema? —No,you     ．You      park it here

---Must Jack come to sign his name on the paper?---Yes, he_____ .

---Must we leave the classroom now?---No, you _____. You _____ leave after the bell rings.

---Is the girl in the red skirt your sister?---No. It _______ be her. She has flown to Australia.

— Do you know whose magazine is it?— I think it         be Lily’s, for we can find her name on the cover.

— Be quiet, the head teacher Mr. Gu is coming.— Don’t worry. It _____ be him. Mr. Gu is much fatter.

— Simon, when are we going to have a class meeting this week?— Sorry. Ask our monitor, please. He         know.

You _________ get up so early. It’s weekend today.

I’m very glad I have my own room in my house. I ____ do all I like in it.

–– ________ I come back before 6 o’clock?–– No, you _______ . But you ______ be back later than 7 o’clock.