问题

While watchingtelevision,________________________.

A:used to
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

You have failed to do what you toand I’m afraid the teacher will blame you．

The food smells terrible, Please___________ .

下列有关中国古代诗歌发展表述正确的是

I walked slowly through the market, where people all kinds of fruits and vegetablesI studied the prices carefully and bought what I needed

you spare me a few minutes now” “______, but I‘ll be freethis afternoon”