题目内容
改写句子,在改写后的句子中填入适当的词,使其与原句意相符,每空一词。
The students were busy with the cleaning when the teacher came in.
The students were ________ their classroom when the teacher came in.
答案:busy cleaning
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题目内容
改写句子,在改写后的句子中填入适当的词,使其与原句意相符,每空一词。
The students were busy with the cleaning when the teacher came in.
The students were ________ their classroom when the teacher came in.