同样是during引导的时间状语 主句的时态咋就不一样呢
【2013浙江10.During the last three decades,the number of people participating in physical fitness programs ______ sharply.
A.was increasing B.has increased C.had increased D.will be increasing
27【答案B
【解析考查动词时态.根据时态标志词during the last three decades,可知使用现在完成时态,选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 为什么选B,