单项选择题

Mrs. Morrison invited us to the party, but our work ______, we politely refused her invitation.

A．not being finished
B．was not finished
C．not having finished
D．had not been finished
<上一题 目录 下一题>
热门 试题

单项选择题
For passengers, ships have the advantage of ______ cheaper than trains or planes.
A．having been
B．to have been
C．being
D．to be
单项选择题
Some folk songs have been ______ down from one generation to another.
A．sent
B．gone
C．come
D．passed
相关试题