A smile nothing, but gives much.
A. pays B. spends
C. costs D. lends
The exhibition tells us we should do something to stop air pollution.
A. where B. which
C. what D. why
British people say “please” and “thank you” all the time ______some people in Asia may think it unnecessary.
A. while B. when C. until D. since
I have all my papers but I still can't find my notes.
A. looked through B. looked for
C. looked after D. looked out
We to start at once, or we will miss the train.
A. tell B. have told
C. will be told D. are told
Because it was raining, I my umbrella to the little girl.
A. offered B. covered
C. borrowed D. opened
