People should __________ from __________ down the trees to protect the earth.
A. be stopped, to cut B. stop, to cut
C. be stopped, cutting D. stop, cutting
I don’t think you can finish the work in such a short time, __________?
A. can’t you B. can you C. do I D. don’t I
__________ useful advice he has given us!
A. What a B. What C. How D. What an
I didn’t know when he _____ back. He said he would call me when he _____ home.
A. would come, got B. came, got C. will come, gets D. came, would get
Four days __________ enough for us. We still need ________ two days.
A. isn’t, another B. aren’t, another C. isn’t, more D. aren’t, more
The big fire hasn’t been __________ yet?
A. put off B. put away C. put out D. gone off
