单项选择题

______ some mammals came to live in the sea is not known.

A．Which only
B．Since
C．Although
D．How
<上一题 目录 下一题>
热门 试题

单项选择题
______ in Beijing for quite a few years, Mr. Park had little difficulty understanding Chinese.
A．Having lived
B．Lived
C．Living
D．To live
单项选择题
Move up a little, I haven't any ______ to sit.
A．area
B．room
C．place
D．space
相关试题