As a recent survey states, people can hardly enjoy a clear blue sky because of the high level of PM 2.5.
#25511
A
in trouble
B
on purpose
C
as usual
D
in ruins
推荐题目
You can come here to ask me ________ if you have any questions.
#26761
A
at one time
B
at a time
C
at any time
D
all the time
what has recently been done to provide more buses for the people, a shortage of public vehicles remains a problem.
#26884
A
Except for
B
But for
C
Because of
D
In spite of
I’ll go to your party___ you promise me that you will invite our class advisor.
#26837
A
if only
B
only if
C
unless
D
since
Those overseas students volunteer 10 hours each week in Paris ________ free food and accommodation.
#25239
A
in search of
B
in contact with
C
in case of
D
in exchange for