It is human activity has caused this global warming.
#85236
A
which
B
that
C
what
D
why
推荐题目
---- Is it in that factory __________ “Red Flag” cars are produced? ---- No, they are produced in our factory.
#85006
A
inwhich
B
where
C
which
D
that
It was with the help of the local guide ________ the mountain climber was rescued.(2013·重庆，27)
#84698
A
who
B
that
C
when
D
how
It was in 1969 ________ two Americans went to the moon by spaceship.
#85348
A
when
B
that
C
at that time
D
just then
It ________ at the crossroads ________ he was killed in the accident the other day.
#85000
A
is; that
B
was; that
C
is; where
D
was; where