Children’s brains can’t develop properly_______ they lack protein(蛋白质).
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A
when
B
since
C
because
D
unless
推荐题目
He made a mistake, but then he corrected the situation _______ it got worse.
#74570
A
until
B
when
C
before
D
as
It is no longer a problem _______ the poor children in this district can go to school.
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A
that
B
whether
C
so
D
because
13. For many cities in the world, there is no room to spread out further, _______ New York is an example.14.
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A
for which
B
in which
C
of which
D
from which
John, ________ money is no problem, still leads a simple life.
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for whose
B
of whose
C
of whom
D
for whom
. On the train to Tibet, I met Paul, ______ I thought was a typical Englishman.
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A
that
B
which
C
who
D
whom