1,--When will the lecture begin?

1,--When will the lecture begin?
--When the students______.
A have sat
B sat down
C will sit
D are seated
本题答案选D
2,First,it is important to recognize what kind of person you are and whitch special qualites make you ______from everyone else
A differ
B different
C difference
D differing
本题答案选B
3,It is not unusnal that rain ____ without stopping these days of the year.
A pours
B poured
C is pouring
D has poured
本题答案选A
4,The troube she is having ___the computer is so great that she doesn't know whom to turn___
A in;to
B with;to
C in;down
D with;down
本题答案选B