[单项选择]They were just going out（）it began to rain.
A. when
B. as
C. while
D. and

[单项选择]They were just going out（）it began to rain.
A. when
B. as
C. while
D. and

[单项选择]So heavy （）that we were prevented from going out.
A. the rain was
B. is the rain
C. was the rain
D. would the rain be

[单项选择]______ I was going out, it began to rain.
A. When
B. While
C. As
D. Since

[单项选择]

The cost is going up for just about everything, and college tuition is no exception. According to a nation- wide survey (21) by the College Board’s Scholarship Service, (22) at most American universities will be (23) of 9 percent higher this year over last.
The biggest increase will occur at private colleges. Public colleges, heavily subsidized by rax funds, will also (24) their tuition, but the increase will be a few percentage points (25) than their privately sponsored neighbors.
As a follow-up, the United Press international did their own study (26) Massachussetts Institute of Technology. At M. I. T. advisors recommended that students have $ 8,900 (27) for one year’s expenses, including $ 5,300 for tuition, $ 2,685 for room and (28) , $ 630 for personal expenses, and $ 285 for books and supplies. Ten years ago the tuition was only $ 2,150. To (29) that another way, the cost has climbed 1
A. higher
B. lower
C. larger
D. smaller

[单项选择]John: I'm just going out for a newspaper. （）. Liza: It's Sarah's birthday today. I've got her a card, but can you buy her some flowers or some chocolate John: She'd prefer a nice plant. I'll get that. Liza: OK.
A. Can I get you anything
B. Whose birthday is today
C. Which newspaper do you want.9
D. Why not go with me

[单项选择]Physical and mental tasks were carried out by the women ______.


A. prior to strenuous exercise
B. following strenuous exercise
C. before they were subjected to unusual pressure
D. after they were subjected to unusual pressure