The research also raises the question ________ children from low-income, less educated families need earlier aid.
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A
what
B
that
C
when
D
whether
推荐题目
_____ she had not spelt the word wrong, Cathy would have got a full mark.
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A
If
B
Since
C
Though
D
When
I wish my house would be built _____we can enjoy beautiful scenery with mountains and rivers．
#30563
A
in which
B
what
C
where
D
that
It is because she loves her students _____ she is respected by them.
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A
who
B
which
C
what
D
that
It has been proved______eating vegetables in childhood helps to protect you against serious illnesses in later life.
#79818
A
if
B
because
C
when
D
that
—Do you think the weather will be all right this summer?—No, _____ we are lucky. The newspaper says it'll be very hot anyway.
#31870
A
if
B
though
C
unless
D
as