______ my grandfather is 75, he is strong enough to sell vegetables every day.
A.Because B.Though C.Since D.If
—Have you read these books?
—Yes. I ______ them a week ago.
A.have read B.has read C.read D.was reading
___________ fun it is to take a cable car to the top of the hill!
A.What B.What a C.How D.How a
If you feel hot, you can ___________ your coat.
A.take out B.take off C.put on D.put off
The heavy rain made me ________at home at the weekend.
A.stayed B.staying C.stay D.to stay
A train ________people from one place to another.
A.used to carry B.is used to carry C.use to carry D.is used to carrying
