Engines are to machines _________ hearts are to animals.
#73870
A
as
B
that
C
what
D
which
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—Did your uncle phone you again the next day? ---No, it was a fortnight ___ he gave me a second call.
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A
that
B
when
C
before
D
since
I will put the book________you placed it and make a mark at the place________I put it.
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where；at which
B
at which；at which
C
where；which
D
at which；where
Scientists still wonder ______ cloning will help or harm us and _____ it is leading us.
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A
that; what
B
whether; where
C
if; that
D
whether; how
The notice came around two in the afternoon ____ the meeting would be postponed.
#67797
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when
B
that
C
whether
D
How
His suggestion ___they have a meeting to discuss the matter is reasonable．
#70791
A
which
B
what
C
that
D
that what