单项选择题

Bicycles make the air ______.

A．clean
B．dirty
C．noisy
D．fresh
<上一题 目录 下一题>
热门 试题

单项选择题
A special part of the street where only bikes can go ______
A．is tallied a bus lane
B．is called a bicycle lane
C．is called a none-bus lane
D．is called a truck lane
单项选择题
Tom works very hard. His brother, ______ , doesn't do much at all.
A．what's more
B．on the other hand
C．for one thing
D．even worse
相关试题