------When do we need to pay the balance ?------- ________September 30. 
#4828
A
In
B
By
C
During
D
Within
推荐题目
Carbon dioxide ___ from burning fuels is the most common of the so-called greenhouse gases.
#4678
A
producing
B
having been produced
C
to be produced
D
produced
---Thank for the ride home!-----______, which of the following is wrong?
#59045
A
Don’t mention it.
B
Not to mention
C
Not at all
D
That’s all right.