The genetic engineering, ______ progress has been very rapid recently, is perhaps the most important of all the sciences．
#69473
A
to which
B
with which
C
in which
D
for
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__________, they couldn’t make her change her mind.
#67679
A
Hard as they tried
B
Tried hard as they
C
As they tried hard
D
They tried as hard
Hesitating what to do, .
#69835
A
so let’s not go outing
B
we had to stay home
C
the tour was cancelled
D
but we should still take the tour
What do you think of the reasons ______ he explained at the meeting ______ reducing the price?
#72260
A
why；why
B
that；for which
C
that；for
D
which；why
House prices vary from place to place and are usually high _____ there are famous schools.
#67857
A
where
B
since
C
when
D
whether