The road construction is based on the agreement, one of ________ purposes is to ensure its completion on time.
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A
which
B
whose
C
that
D
what
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Stephen Hawking believes that the earth is unlikely to be the only planet _life has developed gradually.
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that
B
where
C
which
D
whose
---It’s said that Williams will come to help us.--- we depend on him, we have to do most of the work ourselves.
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A
No matter what
B
However much
C
Whatever
D
However
It hit me _________ my mother could be the proper person to persuade Dad to change his mind．
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A
which
B
what
C
that
D
if