After a long walk, the old man ____ be tired now.
A. can
B. must
C. has to
D. need
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A: Is this ____ pocket calculator? B: No. It's ____.
A. your; his
B. yours; his
C. hers; mine
D. his, her
____ great day July 1, 1997 is!
A. How a
B. What a
C. how
D. What
____ human beings ____ animals can live without air.
A. Not only; but also
Both; and
C. Either; or
D. Neither; nor
We are going to have a sports meeting this coming Sunday. Have you ____ any events yet?
A. taken part in
B. joined in
C. entered for
D. joined\