Mr. Smith is very happy because the cars made in his factory have never been ______.
A. popular B. more popular
C. most popular D. the most popular
If you are looking for a ______, you can make it when it is on sale.
A. price B. bargain C. cost D. bill
He has given me so much help that I really want to do something for him ______.
A. in turn B. by turns
C. in return D. in answer.
You are asked to attend the meeting ______ in the hall this weekend.
A. being held B. to be held
C. held D. holding
It’s the protection for the trees ___ really matters, _____ how many trees are planted each year.
A. what, other than B. which, or rather
C. that, rather than D. as, more than
Ladies and gentlemen, please fasten your seat belts. The plane ______..
A. take off B. is taking off
C. has taken off D. took off
