`2.` My father is interested in carving eggshell in his free time. (fancy)
`⇒` My father fancy carving eggshell in his free time.
interested in+V_ing = fancy+V_ing : thích
`3.` My mother can speak Thai language.
`⇒` Which of your language does your mother can speak?
Which : từ để hỏi cho câu hỏi lựa chọn