---- It is demanded that the letter ___by the end of this week , dad !----I’ll do it immediately .
It ___ have been Tom that parked the car here , as he is the only one with a car. A may B can C must D should
______ is our belief that improvements in health care will lead to a stronger ,more prosperous economy.
---Could you be so kind as to close the window? ---______
News came from the school office _____Wang Lin had been admitted to Beijing university. A which B what C that D where
. It was not until she got home ___ Jennifer realized she had lost her keys.