[ Tenses ]
The equipment ______ by the technician before it can be used for the experiment.
A. must be checked
B. must have checked
C. must check
D. must be checking
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A. can
B. should
C. don’t have to
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Each of the messages on the answering machine (is, are) for Dody.
A. is
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A. retaok
B. redake
C. retak
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I’ve walked ten kilometres. My _____ hurt.
A. feet
B. foots
C. footes