句型转换。

1. They’re having a music class.(就划线部分提问)

                 class                    they having?

2. It’s Friday today.(同上)

                                       is it today?

3. We play the piano twice a week.(同上)

                                      do you play the piano?

4. He usually goes to Beijing by sea. (同上)

                                    he usually go to Beijing?

5. I don’t like this motorcycle because it’s too old. (同上)

                                       you like this motorcycle?