第1个回答 2013-02-20
his sore throat forced my grandfather to quit smoking.
my grandfather gave up smoking for his sore throat.
第2个回答 2013-02-20
My grandpa made a decision to give up smoking because of sore throat.
My grandpa made up his mind to ……
用decide也行
第3个回答 2013-02-20
My grandfather because of a sore throat and decided to give up smoking
My grandfather decide to give up smoking because of sore throat.
第4个回答 2013-04-25
My grandfather decided to quit because of a sore throat
这是我们老师讲的哦~~~~~