2009 Shanghai Question 36 Single-choice Differentiating 2009_上海卷 (英语) $36. During the period of recent terrorist activities, people _____ not to touch and unattended$ bag. A. had always been warnedB. were always being warnedC. are always warningD. always warned Answer keyB ☆ SaveCan't do it, show the explanation查看原卷 →