A . key
B . they
C . obey
D . grey
The room ________often cleaned by the students.
What the monitor said at the class meeting ________ quite all right.
I don’t know why _______ late for class.
—When can I call on you, afternoon or evening? —________. I’ll be at home all the time.
In need of money,Bob had to take _______ job that was offered to him.
All things________,the planned trip will have to be called off.
Jack came to the party_______.
Who do you think it is that he will have_______ the letter?
It isn’t quite ________ that their team will win the game this evening.