---I heard quite a few bikes were thrown away at Liaocheng University.
--- _________________. They should be made use of.
| A．I hope not. | B．Take it easy. |
| C．Not much. | D．That’s too bad. |
—My sister is on holiday in Hainan. —I wonder ____.
| A．When she came back. | B．When did she come back |
| C．When she will come back | D．When will she come back |
Mr zhang speaks very loudly ___ all the people can hear him clearly.
| A．while | B．until | C．because | D．so that. |
—Have you done your homework?—No, I’ll finish it ___ ten minutes.
A at B. in C. on D. after
—Kate. Let’s run right now. Or we’ll be late.—____. We still have 25 minutes left.
| A．Take it easy | B．Not at all |
| C．That’s all right | D．You’re welcome |
—The 3G mobile phone has influenced people’s life a lot since it ___
| A．invents | B．invented |
| C．is invented | D．was invented |