–Tom, you didn’t come to my party last night?
– I ________, but my mom hurt her back and I had to look after her.
A. had to B. didn’t C. wouldn’t D. was going to
Their school looks quite different from _______ ten years ago.
A. what it was B. that it was C. what was it D. that was it
We must try our best to stop pollution ______ a low-carbon(低碳)life.
A. from living B. to live C. living D. live
–I think honesty is the most important thing in doing everything.
–__________ .
A. All right B. Never mind C. I think so, too D. Yes, please
Four hundred dollars for just a pair of shoes? You ______ be joking!
A. may B. can C. can’t D. must
The water ______ cool when I jumped into the pool for morning exercise.
A. was felt B. is felt C. felt D. feels
