单项选择题

The children are having a good time,______ with sand, others with toys.

A．some of them playing
B．who playing
C．some of whom are playing
D．some of them
<上一题 目录 下一题>
热门 试题

单项选择题
______ it with me and I'll see what I can do.
A．When left
B．Leaving
C．If you leave
D．Leave
单项选择题
Charles Babbage is generally considered ______the first computer.
A．to have invented
B．inventing
C．to invent
D．having invented
相关试题