单项选择题

All ______ is needed is a continuous supply of the basic necessities of life.

A．what
B．that
C．it
D．which
<上一题 目录 下一题>
热门 试题

单项选择题
Mrs. Brown is supposed ______ for Italy last week.
A．to have left
B．to be leaving
C．to leave
D．to have been left
单项选择题
Professor Black had us ______ compositions every Friday.
A．to write
B．written
C．write
D．wrote
相关试题