单项选择题

Whatever （） the difficulties, we must go on with the experiment.

A、were
B、should be
C、be
D、could be

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单项选择题
If I （） the problem, I would do it in a different and rapid way.

A、would solve
B、solve
C、shall solve
D、were to solve
单项选择题
In order to improve the security in the world, at no time （） the first to use nuclear weapons.

A、will China be
B、China will be
C、will be China
D、be will China
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