Young as he is, David has gained（）rich experience in（）society.

单项选择题—When did it begin to snow —It started（）the night.

A. during
B. by
C. from
D. at

单项选择题Now that we（）all the money, it's no use turning on me and saying it's all my fault.

A. had lost
B. lost
C. have lost
D. lose

单项选择题We had a really bad time about six months ago but now things are（）

A. looking up
B. coming up
C. making up
D. turning up

单项选择题（）from endless homework on weekends, the students now find their own activities, such as taking a ride together to watch the sunrise.

A. Freed
B. Freeing
C. To free
D. Having freed

单项选择题Thank you for sending us（）fresh vegetables of many kinds. You have done us（）great service.

A. / a
B. the a
C. / /
D. the /

单项选择题______ that Mr. Thomson got such rare fishes

单项选择题It's impossible for a child to do so much work within a short period of time, ______

单项选择题—Will you be able to finish the job this week —______.

单项选择题With the shining water before you and the wind, ______ trees behind you, you can not help ______.

单项选择题She was just about to explain ______ she hadn't passed her maths test chiefly out of carelessness ______ her uncle came.