New medicines and instruments ______ every day to extend life.
| A．develop | B．are being developed |
| C．are developing | D．have developed |
During that frightening war, these foreigners fought _______ us ________ the enemy.
| A．with, for | B．for, against | C．for, with | D．with, against |
I thought that maybe my words will play a role, but when I_______ her to give up smoking, I failed.
| A．managed to advice | B．persuaded |
| C．tried to persuade | D．suggested |
---- We’re leaving for Hainan the day after tomorrow.
---- Wow, have a good trip. And by the way how long ______ there?
| A．have you stayed | B．are you staying |
| C．had you stayed | D．did you stayed |
Our headmaster plans to have his daughter ______at the best school of this city.
| A．educating | B．to educate | C．being educated | D．educated |
It was not until Susan came back ______her close friends were waiting for him.
| A．which she knew | B．which did she know |
| C．that she knew | D．that did she know |