题目内容
【题目】【2012湖北十堰】---Is Tom still in New York or already back at home?
---I’m not sure __________. I’ll call to make sure.
A. how he will be back B. that he has come back
C. why he has come back D. if he has been back
【答案】D
【解析】
试题分析: 句意:汤姆还在纽约还是已经回国了?我不确定是否他已经回来了。我会打电话确认的。if he has been back是否他已经回来了, that he has come back他已经回来了,why he has come back为什么他已经回来了,how he will be back他将怎么回来;根据not sure不确定,可知是有疑问,故排除B,根据情景可知用现在完成时,故选D。
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