急救 急救 回答的时候就说出为什么要选这个答案 反正就像是老师讲解题目一样

题目

急救 急救 回答的时候就说出为什么要选这个答案 反正就像是老师讲解题目一样
1.It's polite ___ you to help the man.It's important ___ us to help each other.
A.for,of B.of,for C.for,for D.of,of
2.Parents should protect their children _________ computer games too much.
A.play B.to play C.of playing D.form playing
3.All the planes can't ____ because of the snowy day.The airport is filled with people.
A.put off B.set off C.star toff D.take off

答案

1.C 这个类型的搭配是 it's adj. for/of sb to do sth.当形容词是修饰人的品质时,用of,如：good,kind,nice,polite,clever等,当形容词是修饰事的时候,用for,如：important,necessary等2.D,protect···from···固...