制定计划时必须留有一定调节余地,以预防及减少不确定因素对计划实施可能产生的冲击是
E
暂无解析
It’simportant_____aforeignlanguage
Tomhasbeenavegetarian____principleforyears.
Theradiois________astrangesignal.What’swrongwithit?
Dr.Yangworked______threedaysago.
Mario:Yourbelovedteacherhasarrivedhere,Nina.
Nina:I______she______untiltomorrow.