1. Those shirts are white.(改为单数形式) ____________________________________ 2. His pen is on the desk.(就划线部分提问) ____________________________________ 3. Those black pants are five dollars.(就划线部分提问) ____________________________________ 4. My mother likes French fries.(改为否定句) ____________________________________ 5. Mrs Smith needs a blue sweater. (改为一般疑问句) ____________________________________ 6. I want a yellow sweater.(对划线部分提问) 7. What is the price of your bag? (改为同义句) 8. My sister"s skirt is yellow .(划线提问) 9. We sell shoes . The shoes are only ¥35 .( 将两句合并为一个句子) 10. What can I do for you ? ( 改为同义句)