—How do you spell trousers? —It’s t-r-u-s-e-r-s.—No, it isn’t right. There is ______ o after r. It’s t-r-o-u-s-e-r-s.A. the B. a C. an
---The population of Henan ___________ very fast. ---I agree. The population problem may be one of the most serious ones today.
---Have you heard about Volunteer? ---Sure, A volunteer is someone _________ is willing to offer help without being paid..
---You see, great people ___________not because they were beautiful. ---Right. They didn’t give up when their lives were difficult.
---Your classroom report is so wonderful. ---I wrote for 3 hours ___________ I finished it.
The flight to Toronto was __________ because of the heavy snow.