couldの後ろのabout・・・？

Question

She studied all she could about subjects that were important to her, in particular art and literature.

ポクス · Answer

She studied （all she could） about subjects that were important to her, in particular art and literature.

all she couldは修飾で挿入されています。

「とりわけ彼女にとって重要であった美術と文学の2教科だけしか勉強出来なかった。」

回答