There is no doubt _______ nearsightedness is a serious problem among the youth of our country.
#67052
A
/
B
which
C
whether
D
that
推荐题目
The project will help people understand the many threats to the natural environment ________ endangered plants and animals live.
#67350
A
which
B
when
C
where
D
that
He expressed a hope _______ he would visit China again the next year, and this was the very hope _______ he would express as soon as he arrived in the country.
#72635
A
that; that
B
which; which
C
that; which
D
which; that
---Mary hasn't written to us for a long time.---What do you suppose __ to her?
#73595
A
happened
B
to happen
C
was happened
D
having happened
His mother likes to have him next to her ________ she can keep an eye on him.
#66571
A
where
B
in which
C
there
D
when
—Where did you have the discussion with Professor Snow?—It was in the classroom ________ we had a biology lesson yesterday.
#67144
A
which
B
when
C
that
D
where