8天堂资源在线,国产成人久久av免费高潮,国产精品亚洲综合色区韩国,国产欧美va天堂在线观看视频,xx色综合

25．The air in Beijing is getting much now than a few years ago． A．clean B．cleaner C．cleanest D．the cleanest 【查看更多】

 

題目列表(包括答案和解析)

The air in Beijing is getting much ________ now than a few years ago．

[　　]

A．clean

B．cleaner

C．cleanest

D．the cleanest

查看答案和解析>>

The air in Beijing is getting much ________ now than a few years ago．

[　　]
A．

clean

B．

cleaner

C．

cleanest

D．

the cleanest

查看答案和解析>>

The air in Beijing is getting much ________ now than a few years ago．

[　　]
A．

clean

B．

cleaner

C．

cleanest

D．

the cleanest

查看答案和解析>>

The air in Beijing is getting much ______ now than a few years ago.
A．cleanB．cleanerC．cleanestD．the cleanest

查看答案和解析>>

The air in Beijing is getting much ______ now than a few years ago.
A．cleanB．cleanerC．cleanestD．the cleanest

查看答案和解析>>


同步練習(xí)冊答案