Mr Green didn’t know ______ last night.A．when does his son come backB．when his s
题型：不详难度：来源：
Mr Green didn’t know ______ last night.| A．when does his son come back | B．when his son comes back | | C．when his son come home | D．when his son came home |
|
答案
| D |
解析
动词know后跟的是一个宾语从句，要用陈述句的顺序，故A不正确，主句是过去
时，从句要用过去时一种，只有D用的是过去时，故选D。 |
举一反三
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