单项选择题

It was in the year 1999 （） John Smith found a way to send messages on the Internet.

A．in which
B．that
C．when
D．which

<上一题 目录 下一题>
热门 试题

单项选择题
This morning the newspaper had a very interesting （） on the population problem.

A．composition
B．article
C．work
D．publication
单项选择题
Did you use to （） when you were a girl

A．enjoy playing
B．enjoy play house
C．enjoying to play house
D．enjoying play house
相关试题