[ Grammar ]
The delivery man is ________ the entrance of the office.
A. on
B. in
C. under
D. at

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Modal Auxiliary Verbs › ViewHe ______ (could / should) take a break and relax for a while.
A. could
B. should
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What did you do yesterday?
I ________ yesterday.
A. study
B. studying
C. studied
D. studies