There’s no doubt _____enough concern must be paid to the problem of the stay­at­home children.
#92189
A
which
B
whether
C
that
D
what
推荐题目
In many parts of China, ________ the idea ______ boys are more important than girls.
#93015
A
it has; which
B
there exists; that
C
there is existing; which
D
there remains to be; that