2. 外语
  3. The workers are busy______models for the exhibition.

The workers are busy______models for the exhibition.

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问题 The workers are busy______models for the exhibition.
选项 A、to make
B、in making
C、being making
D、making
答案D
解析 本题考查busy的用法。be busy doing sth. , 忙于做……。故选D。
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成人本科学位英语

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