Teacher Discussion Forums

In the following exercises the suggested answers are "B". Can we choose "A"? Why? 1.A: You look tired. B: Yes. I ___ non-stop until 5 o’clock. ( A. had been working B: was working ) 2. Would you change this bucket for another? It ____ hold water. OK. I’m really sorry. ( A. can’t B....

疑难问题 标准答案都是B,请问A行吗？为什么？敬请赐教！ :?: 1.A: You look tired. B: Yes. I ___ non-stop until 5 o’clock. ( A. had been working B: was wor...