Before you( )buy a car,please think it over.A.decide to B.decide of C.decide for D.decided( )exciting news it is!.A.How an B.what an C.How D.whatThe TV is too noisy.Could you( ),please?A.turn it off B.turn off it C.turn it on D.turn on it.You have to wait for him( )(help)you.That's the( )(weigh)of about six elephants

1. A.decide to do sth接动词 / decide on sth 接名词
2. D.what news 消息是不可数句词,所以不能选带AN What+(a/an)++adj+名词(单数或复数)+it is / they are. 而HOW接形容词,故不能选
3.A turn it off turn off 关上... 这个短语如果接代词,只能放中间,所以B不对;
4.to help TO不定式短语做目的状语 你得等他帮助你
5.weight 那是大约六头大象的重量 weigh是动词,加t改为名词重量

A.decide to
D.what
A.turn it off

1.A.decide to
知识点 decide to do sth 决定做...
2. D.what
What+(a/an)++adj+名词(单数或复数)+it is / they are.
3.A turn it off turn off 关上...
4.to help
5.weigh
希望有帮助.呵呵

1.A 2.D 3.A 4.weight