There are ______ students in the school . But I don’t know _______ the girls among them .
#14138
A
a number of , a number of
B
the number of , the number of
C
a number of . the number of
D
the number of , a number of
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 In my opinion, it's the flying birds rather than the pilot that________for the air crash.
#12574
A
are to blame
B
is to blame
C
is to be blamed
D
are to be blamed
I ________ watching television; let’s go for a walk.
#12355
A
am concerned about
B
fall in love
C
am fond of
D
am tired of
Is this the recorder you want________?
#12260
A
to have repaired
B
to repair it
C
to have it repaired
D
it repaired