—Someone is knocking on the door. Is it Nancy?
—It be Nancy. She has gone to Shanghai on business.
| A．mustn’t | B．can’t |
| C．may not | D．will not |
It ________ over ten years since the dog ____________.
| A．is； died | B．is； has been dead |
| C．has been； has died | D．was； has died |
--- Have you finished your work _______?
---Yes, I've _______ finished it.
| A．just； already | B．yet； never |
| C．yet； already | D．already； yet |
great fun it is to fly in a balloon!
| A．What | B．What a | C．How a | D．How |
—It’s too hot. Would you mind _______ the door?
—_______, please do it now.
| A．to open; OK |
| B．opening; Certainly not |
| C．opening; Of course |
| D．to open; Good idea |
It was exciting to see so many elephants__________．
| A．marching and dancing |
| B．marching and dance |
| C．to march and to dance |
| D．marching and to dance |