What do you think is good about whatever they are learning?
"彼女はその習い事の何がよかったと言ったのだと思いますか？"
- What do you think is good about whatever they are learning?
- What do you think was good about it?
すみません、はっきりと理解ができないのですが、こういうかんじでしょうか？
Bさん：Aさんが、ある習い事が自分にとって良かったと言っていた
- A said they thought that a certain thing they were learning was good for them.
Aさんは何が良かったんだろうと思う？とBさんに聞きたいです。
- A wants to ask B: what do you think is good about it?
アメリカ合衆国 
