基本信息
1.I _____ Peter that it was not his fault, but he still felt very sad.
A. persuaded B. managed to persuade
C. was able to persuade D. tried to persuade
2.Every possible means _____ to prevent the air pollution, but the sky is still not clear.
A. is used B. are used C. have used D. has been used
3.All things _____, the planned trip will have to be called off.
A. considered B. be considered C. considering D. having considered
4.You can’t be _____ careful when our drive a car.
A. very B. so C. too D. enough
