请问while watching TV,we heard the doorbell ring.ring为什么不能加S啊?

请问while watching TV,we heard the doorbell ring.ring为什么不能加S啊? While watching television,we heard the doorbell ring.为什么不是ri While watching TV,----- A the doorbell ring B the doorbell r while watching tv,___a.the doorbell rang b.we heard the door 英语翻译①While watching television,we heard the doorbell 【rings】 while watching television,__________ A we heard the doorbell While I was watching TV,the phone______(ring) 填什么 改错the doorbell is ring The dog barks when someone_____(ring)the doorbell.请问这里该填ring When she heard the doorbell (ring),she rushed to the door适当形 ring the doorbell 啥意思呢 The doorbell is ring 修改病句