______from space, the earth with water _______70％ of its surface looks like a “blue blanket”.
| A．Seen; covered | B．Being seen; covers | C．Seeing; covering | D．Seen; covering |
A moment, please! Let me take down what you’ve said I forget.
| A．before | B．when | C．until | D．after |
Marco was lucky enough to meet another prisoner enjoyed listening to his stories.（）
| A．who | B．which | C．whose | D．what |
It is _____ challenge for graduates to find ____ work as unemployment is very high nowadays.
| A．the; 不填 | B．a; a | C．a 不填 | D．不填;不填 |
—I’m afraid that I can’t finish the task as soon as planned．
——____________。
| A．Don’t be afraid | B．Don’t mention it | C．I suppose so | D．Take your time |
．Hardly_________the phone I was told that the hotel had been booked full．
| A．I had picked up；when | B．had I picked up；then |
| C．had I picked up；when | D．I had picked up；then |