题目内容

We were busy ________ （get） things ready for the trial production when he phoned us.

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Some molecules are large enough ________ （see） under the electronic microscope.

I shall never forget ________ （meet） the late Premier Zhou during his inspection of our factory.

某队请求暂仃和换人时，应向那个裁判员提出（）

A. 第一裁判
B. 第二裁判
C. 记录台

A beam of light will not bend round corners unless ________ （make） to do so with the help of a reflecting device