Water power ______ electricity in many areas in our country.

[　　]

A. used to produce　　　　　B. used to producing

C. is used to produce　　　 D. is used to producing

Didn't you like this bag? ______

[　　]

A. Yes, I don't.　　　 B. No, I don't.

C. Yes, I didn't.　　　D. No, I didn't.

The kind man asked his servant to have dinner ______.

[　　]

A. with him　　　　　　B. to him

C. together with　　　 D. himself

My brother went back to school to see ______ he ______ his dictionary.

[　　]

A. whether...leaves　　　　　B. if...leaves

C. whether...has leave　　　 D. if... had left

If you ______ there, tell me first.

[　　]

A. wanted to go　　　B. want going

C. wants to go　　　 D. want to go

The pen ______ is in my hand.

[　　]

A. you are looking for　　　B. that you look for

C. you look for　　　　　　 D. that you are looking

I don't think it polite ______ private ______.

[　　]

A. to ask about someone's...affairs

B. to ask about someone...affairs

C. asking about somebody's...affair

D. asking somebody...affairs

I want to buy a new bike. Can you tell me ______ one?

[　　]

A. where to buy　　　 　B. where shall I buy

C. wherever to buy　　　D. wherever I shall buy

We must pay attention to good manners ______.

[　　]

A. sometimes　　　　B. at once

C. at any time　　　D. usually

This maths problem is very difficult ______.

[　　]

A. to work it out　　　B. to be worked out

C. to work out　　　　 D. to be worked out it