It is very important for us to employ a word or a phrase according to the ______ in language studies.
She often shares her deepest thoughts and fears with friends through QQ, as if they ________ chatting in her living room.
—The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job? —________ my students have a try?
I ________ him in time, otherwise he would have fallen off the bike.
The project was carefully planned, or a great deal of money ________.
—How dangerous it was! —Yes, but for the passerby's quick action, the girl ________.