Before you leave the classroom ，please __the lights.
A、upD
暂无解析
Throughout_______history,Englishlanguagehasgonethroughmanychanges.
MH370with239people_______(失去，丢失)contactonMarch8th,2014.
Themachineis_______(控制)byarobotinsteadofaworker.
-Couldyoutellme_______?
-Untiltomorrowafternoon.
Iusuallywalktoschool,but____buswhenitrains.
