题目内容
While watching television, _______.
A. the doorbell rang.
B. the doorbell rings.
C. we heard the doorbell ring.
D. we heard the doorbell rings.
C
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题目内容
While watching television, _______.
A. the doorbell rang.
B. the doorbell rings.
C. we heard the doorbell ring.
D. we heard the doorbell rings.
C