Children are not allowed ________ in the garden.

A. play

B. to play

C. playing

D. played

桵ust I take a bus？

桸o, you ________. You can walk there.

A. mustn't

B. don't have to

C. can't

D. had better not

When you go abroad, you'll find it difficult to get used to other countries' ________.

A. habits

B. practice

C. customs

D. rules

People in western countries celebrate ________ Christmas, but people in China like ________ Spring Festival.

A. /; the

B. the; the

C. /; /

D. the; /

What I have said about him ________ you, too.

A. goes for

B. goes off

C. goes up

D. goes to

Some people have had bad teeth ________ the sugar they're always eating.

A. as

B. because

C. because of

D. since

My chest ________ when I make a deep breath, doctor.

A. harms

B. wounds

C. hurts

D. injures

Mother told me not to ________ too much time ________ novels.

A. take; to read

B. spend; in reading

C. spend; to read

D. cost; to read

You ________ eat so much junk food. It's bad for your health.

A. had better not to

B. shouldn't

C. oughtn't

D. would better not

Teaching is an art ________ science.

A. basing on

B. based on

C. is based on

D. base on