can, could, may和might都可用来表示允许、许可或请求允许、许可，请用can, could, may或might填空。

1．－________(Could, May)I watch TV, Mum?

－Yes, you ________(can, may), but you must finish your homework first．

2．－________(Might, Can)I borrow your bike?

－Yes, you ________(can, may)．

3．－________(May, Might)I ask you a question?

－Yes, please．

－________ you ever ________ with a group?－Yes, I have．

A．Have; study

B．Have; studied

C．Do; study

D．Did; study

I never study grammar because it is ________．

A．interesting

B．exciting

C．boring

D．instructive

________ is bad for your eyes．

A．Watch TV too much

B．Watching TV too much

C．Watch too much TV

D．Watching too much TV

What about ________ English-language videos?

A．looking

B．looking at

C．seeing

D．watching

I failed English, so I'm going to ________ it this year．

A．practice

B．grow

C．improve

D．increase

Lots of practice is ________ to improve our English．

A．the best way

B．the best answer

C．the right problem

D．the right skill

I have ________ the English club for three terms．

A．joined

B．been in

C．taken part in

D．become a member of

Waste paper are collected ________ recycling(再利用)．

A．in

B．as

C．for

D．from

Mr Green gave us ________ on how to protect the wild animals．

A．some advices

B．many advices

C．some advice

D．an advice