i could pass in English exam 。 i sure （ ）that。 括号内填介词

Question

如题所述

Answer 1

of
be sure of sth. 肯定追问

my brother failed ( ) geting his licence

追答

in
fail in sth. 做某事失败

追问

smoking is much had ( ) your body

追答

你能不能不要就多个问题发一个个追问啊？one by one OK?
Smoking is much bad for your body. 下不为例
追问是让你就这个题目我没讲清楚的地方继续问，别跑出去跑太远