You’d better _______ the bus.
A. to catch
B. caught
C. catch
D. catching
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Many a teacher and many a student _______ busy with paper.
A. am
B. is
C. are
D. be
There are my friends who _______ preparing for the party.
A. am
B. is
C. are
D. be
Walking with my mother __________ my happiest time.
A. am
B. is
C. are
D. be
Here _______ a book and two pens on the table.
A. am
B. is
C. are
D. be