對by|bike劃線提問應該用什麼疑問詞啊

1、含有by bike的肯定句子是He often goes to school by bike.對by bike提問就是How does he often go to school.

2、Do you go to school by ferry?How do you go to work?By plane

3、We usually go to work by do you go to work?He often goes to work by boat.