Peter ________ at this job since he graduated from college.
The purpose of the campaign is to raise the public’s _______ of the danger of passive smoking.
You are so dependent that I’m afraid you can’t adjust yourself to _______ alone for a time.A. leave B leaving C. be left D. being left
____ of danger on the road at night, the girl had to go home with a friend____ her.
My laptop computer, ____ I can’t go on with my work, broke down the other day.
If nature doesn’t provide man with the necessary material, it is the laboratory _____ he will turn to for help.