四六级考试

解析:"I bought this computer for $500 l

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【单选题】 "I bought this computer for $500 last week."
"It's on sale this week for only $400. You should have waited."
"Oh, really But how ______ I know"
A.can
B.will
C.do
D.would

网考网参考答案:D
网考网解析:

[题解] 这里是虚拟语气,表示当时怎会知道。当然,如果用would I have known的动词时态,可能会更符合语法的规范。但是没有提供该选项。那就只能选择最接近正确的时态。 查看试题解析出处>>

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