---The population of Henan ___________ very fast.
---I agree. The population problem may be one of the most serious ones today.
A. are growing B. grew C. is growing D. is grown
---Have you heard about Volunteer?
---Sure, A volunteer is someone _________ is willing to offer help without being paid..
A. who B. what C. where D. which
---You see, great people ___________not because they were beautiful.
---Right. They didn’t give up when their lives were difficult.
A. remembered B. are remembered C. have remembered D.were remembered
---Your classroom report is so wonderful.
---I wrote for 3 hours ___________ I finished it.
A. when B. if C. before D. after
The flight to Toronto was __________ because of the heavy snow.
A. put off B. put away C. put up D. put down
The digital camera is so great. I’ve never seen a better one before, but the price of it is ______ in the store.
A. higher B. the most expensive C. the highest D. more expensive
