单项选择题

Writing books ______ a very difficult task.

A．was
B．were
C．is
D．are
<上一题 目录 下一题>
热门 试题

单项选择题
Few people can ______ the morning exercises every day.
A．insist to
B．go on
C．wipe out
D．stick to
单项选择题
You can drive the bus, ______ you have the license.
A．even if
B．now that
C．although
D．so that
相关试题