( )the boys run ( ) than the girls?A .Do;faster B.Does;faste

选A,the boys是复数,前面加do,than是比较级,fast的比较级是faster,故选A.
再问： They would like ( ) trees . would you please them ? ------Of course . A.to grow ; help B.growing; to help C.to grow ;to help
再答： would like to do 固定搭配，would 后加动词原形，故选A
再问： whose apple is ( ),( )or( )? A.big;your;mine B.bigger;your;my C.bigger;yours;mine
再答： 孩子用点功吧，你的苹果和我的苹果作个比较，用比较级排除A，我的物主代词是mine，you的物主代词是yours,故选C