It is only with the help of scientific research _____ bring PM1 air pollution under control.
#84662
A
that we will
B
we will
C
that we do
D
do we
推荐题目
--I can’t find John .Where did you meet him this morning? -- It was in the hotel _____ he stayed.
#85374
A
why
B
where
C
which
D
What
Was it in 2002 __________ he was still at middle school __________ the boy became expert at computer?
#85169
A
that; where
B
when; where
C
that; when
D
when; that
.It was in the 1990s _______ we were working together ____ we made friends with each other.
#85314
A
that; when
B
when; that
C
that; that
D
when; when