一个好主意的英文怎么写

　　I know it's a good idea to use dental floss

　　我知道用洁牙线是一个好主意。

　　It's a good idea to plan ahead

　　提前做计划是个好主意。

　　It's a good idea to give adolescents a little more information than they ask for.

　　青少年提了问题，不妨在回答后再给点儿额外信息。

　　If you don't know your cholesterol level, it's a good idea to have it checked

　　你要是不清楚自己的胆固醇水平，最好去检查一下。

　　It's a good idea to spend the first night of your holiday sleeping off the jet lag

　　把假期的第一个晚上用来睡觉倒时差是个不错的主意。