---____, sir, how can I get to the nearest bank?-- You can ________ a No 2 bus at the station..

--Mum, can I wear my jeans to school?--No, you ________ wear school uniforms. That’s the school rule.

－ Whose is this blue bike? －It ________ be Mary’s. Her bike is black and white. 

－Mom, I’m leaving. －It’s raining. You’d better ________ an umbrella with you. 

– Must I clean up the classroom right now, Miss Green?-- No, you ______.

--The man in a black suit _______ be our youth worker.--- I’m sure it _______ be him. I saw him in the laboratory building some minutes ago.

— Who’s that man in our classroom? It ________ be Mr. Brown. He is much taller.— You mean the man in white? He is an exchange student from England.

We can eat in the dining hall. But we _______ eat in the classroom.

—Mum, I can’t find my new pen.—Don’t worry. It ____________in one of your pockets.

— Must we wear our school uniform this afternoon?— No, you. All of us will go on an outing.

---May we leave the classroom now?---No, you      . You       to leave until the bell rings.

It isn’t going to rain, so you        take an umbrella with you.

—Where is Zhang Hua? Is he in the classroom now?—He          be there, for I saw him in the teachers’ office just now.

— May I smoke here?— No, you ______ . This is a no-smoking room.

—Hurry up, Mum. The lights are turned on. Dad has been back.—It _________ be him. He has gone to Shanghai.

— Must I return the book tomorrow?— No, you ________. You can keep it for three days.

—Morn, must I clean my room now?—No, you     . You can do it in the afternoon.

— You  went to town last month, What  do you think of it?— Terrible . I _____ go there _____.

Food safety is important. Rules____ to stop people from food pollution.

You     keep  quiet  in the library because everyone is reading here.