13. A. although B. while C. if D. since
12. A. ran B. got C. flew D. carried
11.A. proud B. friendly C. lucky D. hopeful
10.A. study B. power C. age D. job
9.A. asked B. told C. promised D. allowed
8.A. helping B. having C. watching D. letting
7.A. studied B. worked C. played D. slept
6.A. head B. turn C. change D. move
5.A. or B. so C. but D. even
4.A. sweeping B. packing C. clearing D. emptying