单项选择题

The speaker kept ______ talking until we got bored.

A． on
B． back
C． up
<上一题 目录 下一题>
热门 试题

单项选择题
Be careful! Don't get______.
A． your key lose
B． to lose your key
C． your key lost
单项选择题
All the ground was covered ______ snow last night.
A． in
B． with
C． by
相关试题