---Why was Mary so upset? ---She isn't u_爱下问搜题

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问题选择题

---Why was Mary so upset? ---She isn't used ___ criticized.

A．be

B．to be

C．to being

D．being

答案

答案：C

名词解释

细胞膜

选择题

It’s hard to rescue drowning people because they ________ so much.

A．sink

B．swim

C．jump

D．struggle