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
解析

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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
解析