He was about to go to bed __________ the doorbell rang.
A. while B. as C. before D. when
As the New Year is coming, we have ____________ preparation work to do.
A. a great deal of B. a great deal
C. a number of D. the number of
—Some people believe _______ green can give us energy.
—I agree. But I wasn’t certain ________ I was suitable for wearing green in the past.
A. that, that B. if, if C. that, if D. if, that
Without friendship，one won’t be happy ________ he is very rich.
A. even B. although C. through D. if
Don’t leave the office until your work ________.
A. finishes B. finished
C. is finished D. was finished
—How was the weather yesterday?
—It was terrible. It rained ________. People could _______ go out.
A. hardly, hardly B. hard, hard
C. hardly, hard D. hard, hardly
