Chinese government sent two pandas， Ruyi and Dingding， to Russia several days ago
The relationship____China____Russia will be closer than before， I think．（ ）
| A． |
both：；and |
B． |
not only；but also |
| C． |
either； or |
D． |
between； and |
If more people give up driving cars，the air will get much _______ in a few days．（ ）
A．cleanB．cleaner
C．the cleanest
The number of people in the city ______ about seven million now．（ ）
A．areB．hasC．is
It's necessary for you _______the classroom clean，class．（ ）
A．keepB．keepingC．to keep
I didn't realize he was a famous scientist ______ you told me．（ ）
A．untilB．becauseC．since
Which of the two subjects do you like，P．E．or music？
_______．They are really interesting．（ ）
A．NeitherB．BothC．None