In a sport team each player has a clear role，and there are few occasions ___________ members are confused or uncertain of their roles.
#75952
A
why
B
that
C
when
D
in which
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The house_________was destroyed has now been repaired.
#76055
A
the roof of it
B
whose roof
C
its roof
D
the roof of that
He is very grateful to the girl____ he often turns for help when he meets with difficulties.
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A
whom
B
to whom
C
to who
D
which
He is a new comer. There is no one _____, so let’s go and help him, shall we?
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A
who to turn to
B
for him to turn
C
for whom to turn
D
he can turn to