Tony is not so clever as Judy, but he works ______than she
A. hard
B. harder
C. hardest
D. the hardest
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The plane ______ when we got to the airport.
A. had taken off
B. has taken off
C. will take off
D. is taking off
China is not ________ it used to be
A. that
B. how
C. whether
D. what
The police ________ looking into the accident now.
A. is
B. Was
C. are
D. were
Our factory is three times as _______ as theirs.
A. the bigger
B. bigger
C. biggest
D. big
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