---Do you still remember when we went to Chong qing?
----I can’t remember now but_____ sometime last summer?
| A．could it be | B．might it be | C．must it have been | D．could it have been |
I don’t think the two parties can agreement in the near future.
| A．arrive | B．reach | C．reach for | D．arrive at |
---I beg your pardon!
---Oh, youto me carefully. (just now)
| A．didn’t | B．haven’t listened | C．don’t listen | D．weren’t listening |
． Knowledge of English is a must in international trade.
| A．the | B．/ | C．A | D．An |
Where on earth have you been? We you back much earlier.
| A．were expecting | B．are expecting | C．had expected | D．expect |
Cloning the sheep ----Dolly is a big in science.
| A．progress | B．run | C．jump | D．rush |