Take care. You ________ burn your mouth. The coffee is hot.
It’s just _____among countries to host the Olympics as to win an Olympic Medal.
Do ____ you think is right, ____ difficulties you may have.
—Why can't I smoke here? —At no time__________ in the meeting-room
______ it is true that a student’s most important goal is to do well in his or her studies, it doesn’t need to be the only goal.
He devoted most of his time to his research, believing his hard work would___sooner or later.