He talks as if he ______ everything.A、knowB、knewC、had knownD、has knownB他讲起话来

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问题 He talks as if he ______ everything.

选项 A、know
B、knew
C、had known
D、has known

答案 B

解析他讲起话来就好像什么都知道似的。此句含有虚拟语气。as if引导的从句是与现在事实相反的假设，所以用一般过去时。

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