I was so familiar with her that I recognized her voice________ I picked up the phone.
| A．the moment | B．after | C．before | D．while |
The purpose of the campaign is to raise the public’s _______ of the danger of passive smoking.
| A．awareness | B．connection |
| C．existence | D．consciousness |
You are so dependent that I’m afraid you can’t adjust yourself to _______ alone for a time.
A. leave B leavingC. be leftD. being left
____ of danger on the road at night, the girl had to go home with a friend____ her.
| A．Being warned; accompanied |
| B．Having warned; accompanying |
| C．Warning; accompanying |
| D．Having been warned; accompanying |
My laptop computer, ____ I can’t go on with my work, broke down the other day.
| A．which | B．that |
| C．without which | D．for which |
If nature doesn’t provide man with the necessary material, it is the laboratory _____ he will turn to for help.
| A．where | B．that | C．which | D．what |