Edward, you play so well. But I ________ you played the piano.
| A．didn’t know | B．hadn’t known | C．don’t know | D．haven’t known |
--Could you take a message for Mr. Green?
---Certainly. I him about something at any case, so it may other.
| A．may see; isn’t | B．see; won’t be | C．will see; isn’t | D．will be seeing; won’t be |
---Mr. White didn’t come last night, did he?
---No. We for him. A whole night was wasted.
A. had waited B. have been waiting C. were waiting D, had been waiting
---I beg your pardon!
---Oh, you to me carefully. (just now)
| A．didn’t | B．haven’t listened | C．don’t listen | D．weren’t listening |
Where on earth have you been? We you back much earlier.
| A．were expecting | B．are expecting | C．had expected | D．expect |
He works in a factory now, but he on a farm for 20 years.
| A．worked | B．has worked | C．had worked | D．had been working |