问题
选择题
They __________ each other for more than 5 years.
A．know
B．knew
C．will know
D．have known
答案
答案：D
题目分析：句意：他们认识5年多了。For后跟一段时间，所以句子是现在完成时态。故选D。
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They __________ each other for more than 5 years.
A．know
B．knew
C．will know
D．have known
答案：D
题目分析：句意：他们认识5年多了。For后跟一段时间，所以句子是现在完成时态。故选D。