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My father has unusual hobby, carving eggshells. As everyone knows, carving eggshells is very difficult,  eggshells very fragile. My dad can make beautiful pieces of are from empty eggshells.  It's amazing. He started the hobby five year ago after a trip to the US whe he saw some carved eggshells in an art gallery. My father did not go to class to learn how to carve.  He learned everything from the Internet.

Did he go to class to learn how to carve?
What is the hobby of writer's father?
When did he start the hobby?
Where did he learn everything from?

Giúp mình với!!

Cây nào bạn?? Hỏi thì phải rõ ràng tí chứ!!

Là một học sinh, để góp phần bảo vệ môi trường xung quanh em cần phải: 

1. I also study temporarily!
2. My teacher is also a homeroom teacher. She is very good with the class so I also enjoyed her math class.
3. I studied lessons like: "Algebra, Theorem, Two parallel lines, ..."
4. Of course. At first, I found the problem really difficult, but now I find it is easy for me.
5.  Because Math is an interesting and rewarding subject. It helps children to develop optimally in calculation and math is also an important subject in exams.