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-How did she get infected? -She the viruses without any protection. [ ] A. expos

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-How did she get infected? -She the viruses without any protection. [ ] A. expos

-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

试题答案

答案:C