问题

While watching television,

A:the doorbell rang
B:we heard the doorbell ring
C:there was someone knocking at the door
D:we heard the doorbell rung

正确答案是：

同类题型

It’ sgreatpleasure to go tocinema after a week’s hard work.

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. _______ great difficulty I had ________ the robber from breaking in!

Where is the post office— It’s ______ the end of the street. You have to walk about 20 minutes to get there.

The reason _______ he was late againwas that he was caught in a traffic jam in the rush hour