单项选择题

（） from space, our earth, with water covering 70% of its surface, appears as a "blue planet"

A．Seeing
B．To be seen
C．Seen
D．Having seen

<上一题 目录 下一题>
热门 试题

单项选择题
（）him do this job by himself

A．Why don't let
B．Why not let
C．Why not letting
D．Why you not let
单项选择题
John regretted （） to the meeting last week.

A．not going
B．not to go
C．not having been going
D．not to be going
相关试题