It’ s suggested by experts that teenagers ____at least 30 minutes exercising, five times a week.
#87174
A
spend
B
to spend
C
spent
D
have spent
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The board considered it urgent that those files _____ right away.
#86957
A
be printed
B
will be printed
C
must be printed
D
had to be printed
Bob said he was going to join our club but he didn’t. What a shame! He ______ his mind.
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A
can’t have changed
B
mustn’t have changed
C
wouldn’t have changed
D
shouldn’t have changed
—How did you do on the test?—Not so well. I ______much better, but I misread the directions for Part One.
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A
could
B
could have done
C
must have done
D
should do
---Why not join us in the game?---I’d love to, but Mother insists that I _________ all my homework first.
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A
finish
B
will finish
C
must finish
D
have finished