21. The third and last chapter _______ b_爱下问搜题

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问题选择题

21. The third and last chapter _______ by Professor Chen.

A．are written

B．are writing

C．is written

D．is writing

答案

C

选择题

I don't like singing in public. It's so _ _. [ ]

A. embarrassed

B. embarrassing

C. thrilling

D. thrilled

问答题简答题

集体合同在什么范围内生效？