__________ I got home, the clock struck 12.
| A．When | B．While | C．During | D．/ |
The further falling of the stock market as reported today has ________ a fresh wave of selling.
| A．given off | B．set off | C．put off | D．got off |
I'm interested in a single room. Do you have any ________？
| A．convenient | B．available | C．possible | D．personal |
I ________ on a sofa because my grandparents have been here to spend the weekend.
| A．slept | B．was sleeping | C．have slept | D．am sleeping |
The Voice of China has set up a stage some people can achieve their dreams．
| A．which | B．where | C．that | D．when |
---I will have to think about it again．
--- If you _, you may lose the opportunity to compete altogether．
| A．hesitate | B．wonder | C．continue | D．fail |