单项选择题

Perhaps the day will come（）our city will be without any pollution.

A、when
B、while
C、as
D、what

<上一题 目录 下一题>
热门 试题

单项选择题
The children（）happily when I went to get Christmas presents I（）in my car.

A、had played, left
B、were playing, has left
C、had played, had left
D、were playing, had left
单项选择题
（）cared about our sufferings like you.

A、Never before anyone has
B、Has anyone never before
C、Before has anyone never
D、Never before has anyone
相关试题