题目内容
52. ( 2012 陝西,26 ) —Sam,come downstairs,please. I need your help.
—Sorry,mum. I on the phone.
A. am talking B. talked C. was talking D. have talked
52. A句意:——Sam ,请来楼下,我需要你的帮助。一对不起,妈 妈,我正在打电话。本题考查现在进行时的用法。根据题意可知 应用现在进行时,现在进行时的结构为am/is/are + doing ,故答案 为A.
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