单项选择题

There has been a nation-wide shortage of building materials, ( )which the trade is only just recovering.

A．for
B．on
C．at
D．from
<上一题 目录 下一题>
热门 试题

单项选择题
He was ill, ( )he went on working.
A．but
B．so
C．and
D．or
单项选择题
-- Will you please help me with my English--( ).
A．Excuse me, I'm afraid not
B．It's very nice of you
C．I'm sorry to hear that
D．Certainly, I'll be glad to
相关试题