题目内容
【题目】—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
【答案】A
【解析】难度适中，考查现在进行时，Sam不能去帮他妈妈，他正在谈电话，答案选A，B是一般过去时，C是过去进行时，D是现在完成时。
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题目内容
【题目】—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
【答案】A
【解析】难度适中，考查现在进行时，Sam不能去帮他妈妈，他正在谈电话，答案选A，B是一般过去时，C是过去进行时，D是现在完成时。