—Everyone in my class passed the exam.—Oh, really? It ________ difficult.
Some audience complain that it usually __________ too long to watch the ads during TV series.
It’s important for us to employ a word or a phrase according to the __________ in language studies.
—I’ve got an “A” in the exam. —That’s a good _______.You’ll surely win a second.
If the boss wants to fire me,he has to give me two months’ ________.
After hospitals buy expensive equipment,they must try to __________ the money they had spent.