Bill is running so fast!I _________ believe my eyes.

We ________ see which way to go if the stars do not twinkle（闪耀）so.

—Could you hang out with me, Kate?    

—Sorry, I ________. I have to do my homework.

________you smell something burning? Go and see what's happening.

—Sam, ________ I join you in the community service?     

—Of course you can.

— Is that man your friend Tom?    

—That man ________ be him,because he has gone to Canada.

—Excuse me, are the glasses Mike’s?     

—No, they __________be Mike’s. He doesn’t wear glasses.

—What a lovely present!Who sent it? __________it be your brother?   

—It __________be my brother. He doesn't know today is my birthday.

He ______ sleep,although he tried to. One cup of coffee in the late afternoon caused him tostay awake almost all night.

My aunt wanted to take a taxi so that she ________ get to the airport on time.

—______ you please take the dog for work?    

—OK, but I have tofold the clothes first.

—________ you help me with my spoken English?    

—No problem.

— ________ you let me paint the fence a little, Tom?     

—Well, no, Ben. I’m afraid….

—________ I have two tickets for the Chinese Farmers’ Painting Exhibition?    

—Sorry. The tickets are sold out.

—_______I use your dictionary?   

—Sure, here you are.

—I’m sorry I ________not get there on time. The traffic is heavy now.    

—That’s OK. Take your time.

Mary ________ go to London next year but she is not sure.

—Whose notebook is this?     

—It ________ be Alan’s. It looks like his.

The man _______ be a doctor in this hospital, but I’m not sure.

You’d better take an umbrella when you go out, because it ________rain.

—Must I return this book before Friday, Sir?    

—No, you ________,dear. You can keep it for two weeks.

Listen up, guys!Everyone ________ wear a mask. Go and buy one if you don’t have one.

The biggest challenge weall face is to prevent further environmental disasters. We ________ take action before it is too late.

—____________ we leave the library before 5 o'clock?    

—No, you needn't. You can stay here until 5:30.

—Look! There are so many people in the restaurant.   

—Yes. The food there ________ be delicious.

This book ________ be Jim’s.His name is on it.

—In China, many studentsfeel stressed because of too much homework.  

—Don’t worry. Our government has realized this problem. I’m sure there________ be good news for them soon.

—According to the schoolrules, the students ________ get their ears pierced.    

—I think that’s right.

You________take me to the station. My brother’s taking me.

My bike was broken yesterday，so I____walk home．

—You ________ takephotos here! Look at the sign. It says “No photos”.     

—Sorry, I won’t.

—How do you usually go to school?     

—My school is far away.I ________ take the bus to school.

—Must I get there on time? I'm too tired to walk on.     

—I'm afraid you _______. You can't miss the good chance.

——Must I be back home before 6 o’clock?    

——No, you ____. Butdon’t be too late.

To my joy, we_________go to the bank. Mary has lent us some money.

I love the weekends,because I ________ get up early on Saturdays and Sundays.

We ________ eat or drink in the museum. It is against the rule.

—Sorry, Miss Chen. I missed the early bus, so I was late again.  

—It doesn’t  matter this time. You ________ leave home 10 minutes earlier than before in future.

We _________ try our best to fight against pollution.

Time is limited! You'd better________your time any more.

It’s getting dark. You’d better ________ out by yourself. It’s dangerous.

—It’s very cold outside.    

—Oh, yes. You’d better________ your coat.

—May I fish here?    

—Sorry, you ________. Look at the sign “No fishing”!

— Must I return the book to you now?    

— __________, you__________. You can do it tomorrow.

—Must I hand in the report now, sir?   

—_____________. You can hand it in tomorrow.

—  ______ I fill in the check-in form right now, sir?

— No, you needn’t. You can complete it this afternoon. 

—Could I go to the movie this weekend，Dad?

一Yes，you____．But you have to come back before nine．

You           play with fire, Tom. It's dangerous.

As we know, fish ___die out of  water. 

— Shall I book some seats for the concert?

—_____________. I’ve already done that. 

—I think Miss Gao must be in the library. She said she would go there.

— No, she ________ be there. I've just seen her there. 

You ______ worry about him. He will get well soon.

Schools _____allow students at least one hour a day for sports．

You ___ open the door before the train gets into the station. 

—I was told to be here before eight.

—Oh ,you         . I’m sorry for not telling you that we have changed the plan. 

—May I take this book out of the reading room?

—         .Please read it here. 

—Who’s that woman with Ann?

—I’m not sure.  It       be  her mother 

—Must I get up early tomorrow?

—No, ________.

—The room is so dirty. ________ we clean it? 

—Of course.  

You look tired．You'd better ____a good sleep．