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

正确答案是：

同类题型

We forgot to bring chopsticks, so we must find something _____ eating our mealAt last we had to use several branches _____ chopsticks[ ]

32No ready technical data was ______________，but we managed to go without

14 FIFA World Cup will be held in Brazilon June 13th, 2014, and 32 football teams_____ so far

Did you remember to give Jenny the video tape?—Yes. _______ I saw her.

Guess what ,we’ve got our visas for a short-term visit to the UK this summer.——How nice! You a different culture then