1. Let's have dinner. (改为否定句)
    Let's_____ ______dinner.
2. What can I do for you?(同义句)
    Can I ______ ______?
3. Those are rulers. (改为单数形式)
    ______ is a ______.
4. His brother has a computer. (改为一般疑问句)
     ________his brother a computer?
5. Your ID card is on the dresser. (对划线部分提问)
    ______ is ______ ID card?