题目内容

Stool (or feces or poop) can provide doctors with valuable information about 1is wrong 2one has a problem in the stomach, intestines, or another part of the gastrointestinal system.

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The soldiers had to sleep in their wet clothes, _____ most uncomfortable.

A. which I think it was
B. which I think was
C. which I think
D. that I think was

The humans are destroying nature day by day, _____ of course, will cause severe punishment from it sooner or later.

A. who
B. when
C. where
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He knew the files could be of help to _____ took over the job.

A. whoever
B. whomever
C. whatever
D. whosever

Your doctor must explain is involved in your treatment before you can agree to it.

A. what
B. that
C. who
D. which

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