"kapan dia mengajarkan kamu ini" should be correct also, right?
In the other question, "Siapa mengajarkan kamu ini?" was marked correct, so your answer should be correct too.
Weird, siapa means "who" not "when"
He gave an example of "mengajarkan kamu ini" was accepted. One of them asked when, one asked who, but both asked "...... taught you this"
it is corect but not a formal language
"Kapan dia mengajarkanmu ini" should be accepted too
what's wrong with "kapan dia mengajarkan kamu ini"
A previous lesson said "Kapan dia mengajarkan kamu ini"
My answer should be acceptable
Please report it if your answer is correct mba