private cars are bringing us convenience, they may also cause traffic accidents and pollution.
#93055
A
When
B
Since
C
while
D
As
推荐题目
---- Putting on a happy face not only helps us make friends but also makes us feel better. ---- _______.
#95215
A
I’d love to
B
I’m with you on that
C
It’s up to you
D
It’s my pleasure
The Great Wall is _______ tourist attraction that millions of people pour in every year.
#92329
A
so well-known a
B
a so well-known
C
such well-known a
D
a such well-known
The manager has to get all these washing machines______.
#94841
A
to deliver
B
be delivered
C
delivered
D
delivering
I think he must have seen me at the meeting last night, ______?
#93756
A
didn’t he
B
don’t I
C
do I
D
mustn’t he
How long do you think it will be _______ scientists succeed in providing a cure for cancer?
#92242
A
when
B
after
C
since
D
before