that boy is busy （）reading the book ,her mother is busy（）her clothes.
题目
that boy is busy （）reading the book ,her mother is busy（）her clothes.
答案
that boy is busy （in）reading the book ,her mother is busy（with）her clothes.
be busy in doing sth 表示过去或现在着重干/忙于某事.
be busy with sth 表示现在忙于某事
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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