It ________be the postman at the door.It's only six o'clock.
| A．mustn't | B．can't |
| C．won't | D．needn't |
The hotline can be very busy, but _____ and you’ll get through．
| A．keeping trying | B．keep to trying |
| C．keep trying | D．to keep to try |
Yongquan Temple,_________ from 908 and _____ in Gushan, Fuzhou, received crowds of people who came to welcome the Chinese New Year．
| A．dating ;located | B．to date ;locating |
| C．dated ;locating | D．having dated;located |
The governments are very cautious about setting a new policy and make no decision _____ they are quite sure it is the right one．
| A．because | B．when | C．until | D．as |
Instead of winning ___ gold medal as had been expected, this world record holder only came ____ fifth in the game.
| A．a; the | B．a; / |
| C．the; the | D．the; / |
— Pity you missed the lecture on nuclear pollution.
— I ______ it, but I was busy preparing for a job interview.
| A．attended | B．had attended |
| C．would attend | D．would have attended |