题目内容

He has （) four interesting books .

A. wrote
B. written
C. been writing

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If a person （) succeed , he must try his best .

A. will
B. is to
C. is going to

一般说来，所谓烦恼，就是那些在脑海中绕来绕去的（)

A. 概念
B. 杂念
C. 思想
D. 头绪

（) in this exam,you will let your parents down.

A. When fail
B. Failing
C. If you fail

一般来说，成年人的注意力持续的时间大概是（)

A. 一小时
B. 三十分钟
C. 一个半小时
D. 四十到五十分钟