根据句意，填入适当的词完成句子。 1. My mum buys the sweater  _______ 20 yuan. 2.1 want to_______ a pair of shoes. 3. The store sells things at a  _______ good price. 4. —What's the _______ of this sweater? —It's 20 dollars. 5. Have a look _______ his new color pen. 6.   _______ and see the new clothes. 7. It's only 2 yuan. _______ can buy it. 8. I buy the new shoes  _______ Huaxing Clothes Store. 9. I can't _______ the price of the bag. 10. —What _______ do you like? —I like green best.