At midnight there are ______ guards at the hotel.
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Terry was so tired that he couldn't walk ______.
A. straight
B. straightly
C. steady
D. direct
—Are we late — I'm ______ so.
A. sure
B. certain
C. willing
D. afraid
______ the teacher came in, everyone was quiet.
A. Direct
B. Directly
C. Directly when
Direct when
I usually buy ______ newspaper on my way home.
A. an
B. a
C. those