Our English teacher is now busy ________ for the exam.

Our English teacher is now busy ________ for the exam.
A. to prepare
B. preparing
C. to preparing
D. prepare

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答案B
本题主要考查be busy这个结构后面接to do还是接doing.在英语中,大多数“be+形容词”的后面都是接不定式to do,但有少部分是接doing的,上述例题be busy doing就是其中一例.例如：
Our headmaster is busy talking with others.我们校长正忙着跟别人谈话.
She is busy telephoning her mother.她正忙着给妈妈打电话.

1年前

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