1. She can find a zebra crossing near her. (改为否定句)
a zebra crossing near her.
2. You must put things in order. (改为一般疑问句，并做肯定、否定回答)
— I things in order? — Yes, you . / — No, you .
3. You must look out for the traffic lights. (对画线部分提问)
I out for?
4. I can go to the supermarket by metro. (对画线部分提问)
you to the supermarket?
5. He can ride bikes now. (把 now 用 three years ago 改写)
He bikes .
6. Lucy must go to bed now. (对画线部分提问)
Lucy now?

1. She can't find
2. Must; put; must; mustn't
3. What must; look
4. How can; go
5. could ride; three years ago
6. What must; do