Itisobvioushowbadmovieswillimpact________children.
A、onA
impact 有时也可以当作一个动词来用，与之搭配的介词仍然是 on。句意：坏电影对儿童会产生什么影响是显而易见的。
Theybuiltahighway_______themountains.
名词解释：preferredstock
Onaverageabout￡5000ayearisspentoneachprivateschoolpupil,_______theamountspentonstateschoolpupils.
Hedeclined_______moreaboutit.
—Youwerebraveenoughtoraiseobjectionsatthemeeting.
—Well,nowIregret________that.
