_Could I go to the movie this Sunday, Dad?Yes, you_____. But you ______ come back before nine.

— You used to 　　　　 the bus to school, didn’t you?— Yes, I did. However, I am used to 　　　　 to school now.

——Who’s the man over there?Is it Mr. Black?——It______be him. He’s much taller.

---Dad, must we wait until the light becomes green?---Yes, I’m afraid we ______. That’s the traffic rule.

 The man in the office ____be Mr. Black because he phoned me from London just now.

 This blue car ____________ be Bob’s bcause his car is black.

—–I think the man over there must be Tom.—–It _____ be him. He has ______ to America.

—Could I invite my friends to my birthday party?—Sorry, you ______.

-----        you swim?   ----- Yes,I can.

--Who’s singing in the next room? Is it Lucy?---It       be her. She has gone to New York.

You       be hungry after the long walk. Help yourself to some cakes.

—________I do the laundry first, Mum?—No, you ________. You can do your homework first.

Sometimes smiles ______ be false, hiding other feelings like anger, fear or worry.

—By       local farmers, we hope        them improve their lives.—I think it’s a good idea. 

—Have you written anything on Chinese traditional medicine so far?— _________, but I have a plan for it.

—Is John coming by train?—He should, but he     not. He likes driving his car, but I’m not quite sure.

We think Betty the best student. The sentence structure is ______.

—I saw Kate in the park this morning.—It ______ her. She moved to Canada last week. 

—        I answer this question in English? —No, you       . You may answer it in Chinese.

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