There are (pros and cons) in everything, old or new.
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In this busy world, we need more (peace of mind).
A. 对
B. 错
Do you always (keeps in touch) with your friends home and abroad?
A. 对
B. 错
Wechat (make it possible) for my mom to show her flowers every day.
A. 对
B. 错
Some people (long for) the future but also worry about new changes in their life.
A. 对
B. 错
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