题目内容
-How did she get infected?
-She _________ the viruses without any protection.
[ ]
A.
exposed to
B.
had exposed to
C.
was exposed to
D.
had been exposed to
答案:C
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题目内容
-How did she get infected?
-She _________ the viruses without any protection.
exposed to
had exposed to
was exposed to
had been exposed to