1. Her blue pants are twenty dollars. (改为一般疑问句,并作否定回答)
   _______ her blue pants twenty dollars?   No,_______ _______.
2. The yellow shirt is fifteen yuan.(对画线部分提问)
   _______ is the yellow shirt?
3. My new shorts are blue.(对画线部提问)
    _______  are your new shorts?
4. The boy in green is my brother. (对画线部分提问)
    _______ _______  is your brother?
5. Can I help you? (改为同义句)
    _______can I_______ for you?
6. This sweater is  ￥60. (改为复数句)
    _______ _______ _______ ￥60.
7. She wants a black bag. (改为一般疑问句)
   _______she_______ a black bag?