用动词的适当开工填空。
1. He  usually has rice for lunch. (就斜体部分提问)
    _____ _____ he  usually _____ for lunch?
2. They did exercises yesterday morning. (改为一般疑问句)
    _____ they _____ eye exercises yesterday morning?
3. These stone weigh two tons. (就斜体部分提问)
    _____ _____ _____ these stones weigh?
4. They didn't buy any computers last year. (改为肯定句)
    They _____ _____ computers last year.
5. We will finish the work in two days . (就斜体部分提问)
    _____ _____ _____ you will _____ _____ 
6. The temperature is too low to change liquids into gases. (改为同义句)
    The temperature _____ _____ enough to turn liquids into gases．
7. Everybody knows that computer can store information. (改同义句)
    It is _____ that information  can _____ _____ in computers．