I don't know whether you happen ____.A.to be heard B.to be hearing C.to hear D.to have heard

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I don't know whether you happen ____.A.to be heard B.to be hearing C.to hear D.to have heard
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I don't know whether you happen ____.A.to be heard B.to be hearing C.to hear D.to have heard
I don't know whether you happen ____.A.to be heard B.to be hearing C.to hear D.to have heard

I don't know whether you happen ____.A.to be heard B.to be hearing C.to hear D.to have heard
A
我不知道是否隔墙有耳,你的话碰巧被人听到了

I don't know whether you happen to hear.
happen to do sth 碰巧做某事(无意间所做的事)。句子意思是:我不知道你是否听说了、、、。
A是不定式的被动态,因为不是被听说,所以排除。
B是不定式的进行时,因为不是正在听说。
D是不定式的完成形式,表示不定式的动作发生在谓语动作之前。这道题里谓语动词是happe...

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I don't know whether you happen to hear.
happen to do sth 碰巧做某事(无意间所做的事)。句子意思是:我不知道你是否听说了、、、。
A是不定式的被动态,因为不是被听说,所以排除。
B是不定式的进行时,因为不是正在听说。
D是不定式的完成形式,表示不定式的动作发生在谓语动作之前。这道题里谓语动词是happen 也就是“碰巧”,听说(hear)这个动作没有发生在这个动作之前,所以排除。

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