5.Educationistsconsiderit_____ch? ,简单的描述是5. ucationists consider it _____ children doing homework all day long on weekends.A.  improper to haveB.  improper havingA与B有什么区别？,答案是选A
consider it +adj.+ to do    认为做．．．　
consider +doing   考虑做某事