句型转换。

1. Lily is going to Beijing by train .(就画线部分提问)

    ____________ ____________ Lily going to Beijing?

2. Kate's dress is very nice . (就画线部分提问)

    ____________ ____________ Kate's dress?

3. The elephant is the biggest animal on land. (就画线部分提问)

   ____________ ____________ the biggest animal on land?

4. I like pandas best. (就画线部分提问)

    ____________ ____________ do you like best?

5. Why not go by bike? (改为一个完整句)

    Why ____________ ____________ go by bike?