问题

How did he get infected? –She ____the viruses without any protection

A:exposed to
B:had exposed to
C:was exposed to
D:had been exposed

正确答案是：

同类题型

He admittedalie in order to avoid.

Father doesn’t know Jack has been gambling; if he found out, I think he him out.

is of no importance to great thoughts, ________ are as fresh today as when they first passed through their authors’ minds, ages ago.

ur different countries, Jessie is atypical third culture kid, the term of which refers to children who spend aperiod of time in one or more cultures．

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