Many a teacher and many a student _______ busy with paper.
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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
Either you or Marry often _______ the research.
A. do
B. does
C. did
D. done