What is the meaning of 报 in 你有报语言培训班吗?
I think the 报 here is referring to registering/signing up/apply as in 报名.

A: Have you registered/signed up for X class yet?
B: Yes, I have (registered/signed up).
甲: 你 X(课/班) 报名了吗？
乙: 嗯 我报了。