I met Mr Green ________ I was walking across the bridge, but I didn't say hello to him.

A. before

B. after

C. until

D. while

Mother said cooking ________ much time every time.

A. took

B. takes

C. taking

D. to take

Could you tell me ________ that's a fast train or not?

A. whether

B. what

C. when

D. where

Will you please tell me ________ ?

A. where Pudong Airport is

B. how far Pudong Airport was

C. how can we get to Pudong Airport

D. when was Pudong Airport built

Neither you nor he ________ New York City.

A. has gone to

B. have gone to

C. have been to

D. has been to

It's ________ good food that we all like it very much.

A. so a

B. such a

C. so

D. such

When my mother is tired, I try to be ________ and make dinner.

A. help

B. helpful

C. use

D. well

He failed ________ he was too careless.

A. as

B. since

C. because

D. for

I was surprised that she could run ________ I.

A. as faster as

B. so fast than

C. as fast as

D. not so faster as

He refused to give up smoking ________ we explained（解释）that it harms one's health.

A. no matter what

B. no matter how

C. wherever

D. ever since