---We’ve seen many more days of blue skies recently. ---True. But back in 1998, ________ Beijing started its “Defending the Blue Sky” program, the city only ________ about 100 days a year.
#34101
A
which, sees
B
that, saw
C
when, saw
D
and, seeing
推荐题目
_________you have expressed your fierce determination to get it right, you should act immediately.
#31865
A
Even though
B
Ever since
C
Now that
D
As though
Lessons can be learned to face the future, ________ history cannot be changed.
#30007
A
though
B
as
C
since
D
unless
26. Parents always tell us not to stay ________ there is danger.
#79644
A
in which
B
the place where
C
at the place
D
Where
You are saying that the plan will be carried out successfully, and it is ____ I disagree.
#31047
A
what
B
that
C
where
D
how