完形填空。 My name is Wang Kun and my sister is Wang Wei. Since middle school, we have dreamed about taking agreat trip by 1 . When we graduated from college,we finally got the 2 to do it. We started our long bike ride 3 the Mekong River (循公河) in October. 4 it was autumn, thesnow had already started to fall in Tibet. Our legs felt so heavy and 5 that we thought they were ice. Have you ever seen 6 ride bicycles? Wang Wei was in front of me as usual. I knew I didn't need toencourage 7 . To climb up the mountain road was hard work but to go 8 the hills was great fun. When we reached a valley (山谷), it became much warmer. We had to 9 our clothes. In the early evening, we stopped to 10 our tents and then we ate. After supper, Wang Wei went to 11 but I stayed awake. At midnight, the sky became clear and the stars were 12 . There was almost no 13 only the sound of the fire. What a 14 night! We have already traveled so far. We are reaching Dali in Yunnan Province. There our cousins Dao Wei and Yu Hang will 15 us in the ride trip. I'm sure we'll have a greater time together. (     )1. A. bus (     )2. A. chance (     )3. A. in (     )4. A. Although (     )5. A. warm (     )6. A. snowmen (     )7. A. him (     )8. A. back (     )9. A. wash (     )10. A. put up (     )11. A. work (     )12. A. colourful (     )13. A. wind (     )14. A. busy (     )15. A. greet B. bike B. experience B. on B. Because B. hot B. businessmen B. her B. over B. carry B. put on B. sleep B. dim B. fog B. boring B. join C. train C. information C. along C. When C. comfortable C. engineers C. me C. up C. change C. put away C. travel C. light C. cloud C. noisy C. visit D. plane D. instruction D. above D. If D. cold D. foreigners D. them D. down D. dry D. put down D. run D. bright D. rain D. quiet D. interview