?I'm waiting for the mail. Do you know ________ it will arrive?

?Usually it comes by 4:00.

A. how

B. where

C. when

D. what

?Could you tell us how long ________ ?

?About three days.

A. does the sports meeting last

B. the sports meeting last

C. will the sports meeting last

D. the sports meeting will last

Excuse me. Would you please tell me ________ buy a fridge?

A. what to

B. where to

C. what I can

D. where can I

?I'm going to play basketball after school. What about you?

?________.

A. Are you It's so late

B. Yes, basketball is very popular

C. I like basketball very much

D. So am I

?At that time I could hardly believe my eyes.

?________.

A. So could I

B. So I could

C. Nor could I

D. Nor I could

How many days ________ there by the time you left?

A. had you stayed

B. have you stayed

C. did you stay

D. would you stay

?Hello, could I speak to Miss Fang, please?

?________ I'll get her for you.

A. Hold on, please.

B. I'm Miss Fang.

C. Who are you

D. She is at work.

?Where's Lucy?

?I'm not sure. She ________ in the school library.

A. maybe

B. must be

C. may be

D. will be

To make our hometown more beautiful, you ________ throw rubbish into the river.

A. needn't

B. mustn't

C. must

D. may

Usually a driver sits ________ a car.

A. in front

B. in front of

C. in the front of

D. before