单项选择题

When was the gasoline engine ______

A．found
B．discovered
C．invented
<上一题 目录 下一题>
热门 试题

单项选择题
The family name is the ______ in China.
A．first name
B．given name
C．middle name
单项选择题
--Where are ______ --are in ______ pencil-box.
A．their, Their, they
B．they, They, their
C．are, Their, are
相关试题