Children’s brains cannot develop properly _________ they lack protein.
#30134
A
because
B
since
C
when
D
unless
推荐题目
The husband rushed to the hospital ________ he heard that his wife was injured.(2012·天津六校联考)
#29960
A
the moment
B
for the moment
C
direct
D
in a moment
In some places women are expected to earn money ______ men work at home and raise their children.
#32326
A
but
B
while
C
because
D
though
The famous scientist was going out _____ he found himself surrounded by lots of young people.
#34549
A
when
B
before
C
while
D
after
-- How about camping this weekend, just for a change? -- OK, __ you want.
#34732
A
whichever
B
however
C
whatever
D
whoever