初中英语选择三道（要解释,详细加20）
1.My home is about_______ our school.(B)
A.10 miles far awayB.10 miles from
C.10 miles far from D.10miles for
问：C不可以么,因为一直记得老师说far away from,只能省略away
2.when you leave the room,make sure the door _______(B)
A.was lockedB.is locked
C.will be lockedD.should be locked
问：这道一开始觉得是主将从现,后来看答案在想,也许是因为表状态的词只用一现.可是还是觉得c可以,认为C后面是省略了一个by you……总之,求解释
最后一道挺让人汗颜的,是物理没学好还是怎么的……
the vaccum cleaner produces________energy
A.sound B.heat
C.movementD.both A and C
问：为毛呀!吸尘器自己会动的?不是人拖着走的嘛!
有木有!有木有!