The genetic engineering, ______ progress has been very rapid recently, is perhaps the most important of all the sciences．
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A
to which
B
with which
C
in which
D
for
推荐题目
I didn’t understand ________led him to be late for three times every week.
#73685
A
what it was that
B
it was where that
C
how it was that
D
why was it
---- Did he come back early last night? ---- Yes. It was not yet eight o’clock _______ he arrived home.
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A
when
B
that
C
before
D
until
People all over the world have a dream ______they will always live a peaceful life.
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A
that
B
what
C
which
D
when
Many people _________ lose one of their senses have made great achievements.
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A
who
B
whom
C
which
D
what
Can you tell me _________________ last night?
#70318
A
what was the matter outside
B
what was matter outside
C
what the matter was outside
D
what is wrong outside