It is necessary that you ______ be present at the meeting.
A. should
B. could
C. may
D. will
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You must get everything___ before you begin the experiment.
A. prepare
B. prepared
C. preparing
D. is prepared
The two cheats had the lamp __ all night long, pretending to be working hard.
A. burn
B. burning
C. burnt
D. to burn
We’ve decided to ______ 100 yuan so that we can buy a computer next year.
A. solve
B. set aside
C. produce
D. add
_______ computer has become more and more important is clear to us all.
A. That
B. Which
C. As
D. What