题目内容
During the period of recent terrorist activities, people _____ not to touch and unattended bag.
[ ]
A. had always been warned
B. were always being warned
C. are always warning
D. always warned
B. were always being warned
C. are always warning
D. always warned
B
![](http://thumb.zyjl.cn/images/loading.gif)
练习册系列答案
相关题目