There are laws in some coutries which prohibit advertisements from___at inappropriate time and places
The man has been in____ doctors describe as a vegetative (植物的) state for six years.
But for the fact that I_ an unexpected visitor, I _____to the lecture.
The old man, for _life had been very hard, donated his possessions to poor villages in Anhui.
—Why do you look so upset, Linda?—There are so many troublesome problems____.
I lost the key to my dormitory.Could you ____ for the night?