2. 外语
  3. The students are busy ______ the examination.

The students are busy ______ the examination.

admin2013-01-03  63
问题 The students are busy ______ the examination.
选项 A、preparing for
B、preparing
C、to prepare
D、to prepare for
答案A
解析 固定短语。be busy doing sth．意为“忙于做某事”。
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成人本科学位英语

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