1. Friendship is easier made than __________.
A. kept B. to be kept C. keeping D. being kept
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2. Mary's younger sister suddenly __________ crying when we were eating.
A. burst out B. burst in C. burst into D. burst on
3. I don't know__________this machine correctly.
A. when to use B. how to use C. where to use D. what to use
4. I will never forget the years__________ we spent together in Australia.
A. when B. that C. in when D. what
5.——I’m afraid that I can't buy the ticket for the fashion show. —You __________worry about it. It's for free.
A. can't B. mustn't C. wouldn't D. needn't
_________________(年平均气温)in this district is 22℃.你多久参加一次社会活动?_________________do you _________________ a social activity?
参考答案：AABBD
The yearly average temperture
How often 、 take part in
