问题

While watching television, .
A:the doorbell rang
B:the doorbell rings
C:we heard the doorbell ring
D:we heard the doorbell rings;
B:the doorbell rings
C:we heard the doorbell ring
D:we heard the doorbell rings;
正确答案是:
同类题型
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Would you mind _______here—I’m sorry about that. I’ll go somewhere else.
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When will they arrive?—I ________ they will arrive in 10 minutes. Let’s wait here. [ ]