use your noodle. 用脑子想一想
think tiwce. 再三考虑
Think long and hard. 认真思考
Keep your chin up. 不要气馁！别灰心。
In no time 立即、很快。
bedtime reading 睡前阅读
as fit as a fiddle. 非常健康
go down with a cold. 得了感冒
a bad fall 摔的不轻
pull a muscle 拉伤肌肉
I will get right on It . 我马上去做。
Take out books from the library. 从图书馆借书
It is dangerous to monkey around in the workshop. 在车里胡闹是危险的。
