Probably no one is _______ mistakes, only some make more and some less.
A. free away
B. free from
C. free with
D. free
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Most people _______ buying their own homes rather than renting them.
A. opt for
B. opt with
C. opt on
D. opt in
The army said it did not wish to __________ but rather wanted someone to take charge.
A. control power
B. take power
C. wield power
D. charge power
____ I told him that Mr. Smith knew why he was fired.
A. It is not until
B. It is until
C. It was not until
D. It was until
C++语言程序能够在不同操作系统下编译、运行,说明C++具有良好的（ ）。
A. 适应性
B. 移植性
C. 兼容性
D. 操作性
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