1.那个大石头有多重?

1.那个大石头有多重?
_____ _____ does that big stone _____?
句型转换
2.My mother went shopping this morning but she didn't bring any money with her.
My mother went shopping this morning _____ _____ any money with her.
3.Jimmy began to learn Chinese Kungfu when he was 15 years old.
Jimmy began to learn Chinese Kungfu ______ ______ ______ ______
15.