while watching tv,___a.the doorbell rang b.we heard the doorbell ring c.we heard为什么选B啊?如果是D,那前面应该怎么说?为什么不是A呢?c.we heard the doorbell rings d.we heard the doorbell rang

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while watching tv,___a.the doorbell rang b.we heard the doorbell ring c.we heard为什么选B啊?如果是D,那前面应该怎么说?为什么不是A呢?c.we heard the doorbell rings d.we heard the doorbell rang
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while watching tv,___a.the doorbell rang b.we heard the doorbell ring c.we heard为什么选B啊?如果是D,那前面应该怎么说?为什么不是A呢?c.we heard the doorbell rings d.we heard the doorbell rang
while watching tv,___a.the doorbell rang b.we heard the doorbell ring c.we heard
为什么选B啊?如果是D,那前面应该怎么说?为什么不是A呢?
c.we heard the doorbell rings d.we heard the doorbell rang

while watching tv,___a.the doorbell rang b.we heard the doorbell ring c.we heard为什么选B啊?如果是D,那前面应该怎么说?为什么不是A呢?c.we heard the doorbell rings d.we heard the doorbell rang
while+v.ing的形式仅限于主句与从句的主语一致,watching TV的主语是we,主句的主语也应该是we
hear的用法是hear v.或hear v.ing
所以C D都不对

没看到你的D
但是前面分词结构的逻辑主语是we,
A的主语是the doorbell,所以不行，门铃怎么能看电视呢？？

因为这是一个整句,前后主语一致,while watching tv主语肯定是人,A主语就成物了

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