题目内容
21、During the period of recent terrorist activities, people _______ not to touch any unattended bag.
A. had always been warned B. were always being warned
C. are always warning D. always warned
试题答案
21、B
解析：本题考查时态和语态，首先我们要判断时态。意思是在最近恐怖活动的这段时间里，人们一直被提醒不要去碰那么丢弃的包。所以，表达的是在一段时间里一直做某事，完成时可以表达这个含义，或者是进行时和一段时间联用也可以表达这个含义。有的同学可能会选择A，但是我们没法确定用过去完成时，因为过去完成时是不能单独使用的。应该是现在完成时。但是没有，所以我们只有选择B。
During the period of recent terrorist activities, people _______ not to touch any unattended bag.
A. had always been warned B. were always being warned
C. are always warning D. always warned
查看习题详情和答案>>During the period of recent terrorist activities, people _______ not to touch any unattended bag.
A. had always been warned B. were always being warned
C. are always warning D. always warned
查看习题详情和答案>>During the period of recent terrorist activities, people ____ not to touch any unattended bag.
A. had always been warned B. were always being warned
C. are always warning D. always warned
查看习题详情和答案>>
During the period of recent terrorist activities, people _______ not to touch any unattended bag.
A. had always been warned B. were always being warned
C. are always warning D. always warned
查看习题详情和答案>>
During the period of recent terrorist activities, people ____ not to touch any unattended bag.
A. had always been warned B. were always being warned
C. are always warning D. always warned
查看习题详情和答案>>
During the period of recent terrorist activities, people ________ not to touch any unattended bag．
A．had always been warned
B．were always being warned
C．are always warning
D．always warned
| During the period of recent terrorist activities，people ______ not to touch any unattended bag. A．had always been warned B．were always being warned C．are always warning D．always warned |
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