句型转换。
1. This is a very interesting storybook. (改为同义句)
This is ______ interesting storybook.
2. They are going to take a taxi to the bank. (对画线部分提问)
______ ______ ______ ______ are they going to the bank?
3. Where does she come from? I want to know. (合并为一句)
I want to know ______ ______ ______ from.
4. Betty's last trip was pretty good. (对画线部分提问)
______ ______ Betty's last trip?
5. Do you enjoy traveling by train or by airplane? Why? (根据实际情况回答)
____________________________________