It’s a good idea to send the old books _________the children who need them.

A. at B. of C. to D. by

Sometimes you will never know the true value of a moment ______ it becomes a memory.

A. though B. when C. unless D. until

---How do you like the film you saw last night?

---Boring, I have never seen ______ one

A. a worse B. a better C. the best D. the worse

It is _________ difficult question that _______ students can answer it.

A. such, a few B. so. Few C. such a , few D. such a , a few

Look at the“No Photos”sign.You______take photos in the art museum.

A. should B. can C. needn’t D. mustn’t

Don't ________ the lift. Something has gone wrong with it.

A. get into B. get to C. get out of D. get on

— Look at the sign! You aren’t allowed _______ in public places.

— Sorry, I didn’t see it.

A. smoke B. smoking C. to smoke D. smoked

（2017年贵州安顺） —Excuse me, sir, smoking _____ in the gas station.

—Oh, I'm awfully sorry.

A. doesn't allow B. is allowed C. aren't allowed D. isn't allowed

—Winter swimming is exciting, but one can’t do it ________ he or she has got some training.

— Exactly! It can be dangerous.

A. after B. unless C. if D .while

—________ fantastic film it is!

—You mean the hot film Amazing China? I like it, too.

A. How a B. How the C. What a D. What