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。
Hedeclined_______moreaboutit.
—You were brave enough to raise objections at the meeting.
— Well, now I regret ________ that.
Importswillbeallowedinproportion_______exports.
名词解释：copyright
Onaverageabout￡5000ayearisspentoneachprivateschoolpupil,_______theamountspentonstateschoolpupils.
