good luck,no problem,go ahead的意思及各自用法举例句,

good luck,no problem,go ahead的意思及各自用法举例句,
good luck,no problem,go ahead的意思及各自用法
举例句,

good luck,no problem,go ahead的意思及各自用法举例句,
good luck 祝好运
I have an exam tomorrow.Good Luck
no problem 没问题
Do you think you can pass your exam tomorrow?No problem.
go ahead 随便
Can I turn on the light?go ahead.