Please don’t ask me to solve mathematical problems; they are beyond my ____.

 He was so nervous during the test. No ________he didn’t pass the exam.

You should read the ____________ in the car repair manual (手册) carefully before you start to work on it.

Usually a child's behavior is a ________ of his family environment. 

John is a man of much _______ and he had a lot of interesting _______ in his life.