Change the forms of the following sentences. 句型转换。
1. I like trips in the car.（改为否定句）
2. The tortoise is walking down a road.（对画线部分提问）
3. The pencil is in the desk.（对画线部分提问）
4. An elephant is bigger than a tiger.（改为同义句）
5. I don't know. Where's my sword?（连为复合句）
1. I don't like trips in the car.
2. What's the tortoise doing?
3. Where's the pencil?
4. A tiger is smaller than an elephant.
5. I don't know where my sword is.