She wore some thin clothes in such a cold day, _______ I found quite strange.
_______ you study harder, you’ll fall behind others. A. If B. Unless C. Until
She _______ the computer since 2001. A. has had B. has bought C. had
In the past 10 years, great changes ___________ place in Beijing. A. took B. have taken C. have took
– I am not interested in the story. – _________ A. Neither am I. B. So am I. C. So I am.
______ of the area _______ covered by trees. A. Two-third; is B. Two thirds; is C. Two-third; are