完形填空。 Clerk: Can I help you? Jenny: Yes, please. Do you __ 1 __ black backpacks? Clerk: Yes, we have black ones, red ones __ 2 __ blue ones. Jenny: How__ 3 __ are they? Clerk: Each of them are fifteen __ 4 __ . Jenny: Great! Well, I__ 5 __ want a T-shirt. Can you tell me the prices of your T-shirts? Clerk: OK. Look! These red T-shirts__ 6 __ seven dollars. Do you__ 7 __ the color? Jenny: Yes, I do. How much are those yellow shor ts__ 8 __ the table? Clerk: Fifteen dollars e ach. And__ 9 __ black T-shirts are twenty dollars. Jenny: OK! I'll__ 10 __ a red one. Thank you. Clerk: You're welcome. (     )1.  A. have (     )2.  A. or (     )3.  A. long (     )4.  A. dollar (     )5.  A. also (     )6.  A. am (     )7.  A. find (     )8.  A. for (     )9.  A. this (     )10. A. bring B. see B. but B. many B. dollars B. only B. is B. like B. of B. that B. take C. want C. and C. much C. dollar's C. very C. are C. meet C. on C. those C. sell