句型转换。
1. Tony thinks Chinese is rather difficult. (对划线部分提问)
    _____ _____ does Tony think Chinese is?
2. Betty's Chinese is very good. (对划线部分提问)
    _____ _____ Betty's Chinese?
3. Will there be a meeting tomorrow? I wonder. (合并成一句)
    I wonder _____ _____ _____ be a meeting tomorrow.
4. In a few years, there will be more trees on the mountain. (改为同义句)
    In a few _____ _____ , there will be more trees on the mountain.
5. I'll wait for you whenever you return. (改为同义句)
    I'll wait for you _____ _____ _____ you return.