Children’s brains cannot develop properly _________ they lack protein.
#30134
A
because
B
since
C
when
D
unless
推荐题目
You can go out, you promise to be back before 10 o’clock.
#31787
A
unless
B
as long as
C
because
D
since
________ private cars are bringing us convenience, they may also cause more traffic accidents and pollution.
#32291
A
While
B
As
C
If
D
Since
She thought I was talking about her daughter, __________,in fact, I was talking about my daughter.
#31444
A
whom
B
where
C
which
D
while
.It’s too noisy here. Take the children ______ it is quiet.
#34041
A
to which
B
where
C
to where
D
which