根据下面资料，回答题
My daughter was in her last year of high school. She wanted to have some adventures before she 21 the school. She took an adventure class. This was a class where 22 climbed to differentheights. They began at 35 feet and 23 up from there. When she told me this, I was 24 I knew she was afraid of heights. She came home and toldme her first climb didn' t go 25 She went up the 35-foot pole. She said she was fine 26 upthe pole. When she got up there, she realized she had to 27 on a line to get to the other side. Shelooked down and saw how far she was from the 28 She felt frightened and began to 29 Shesaid she had never felt this fearful in her 30 She was so afraid that she couldn' t move and 31to come down. When her feet 32 the ground, she started to cry. She didn' t want to 33 the class. She had no choice but to do all the other climbs. She didn' tlet 34 hold her back. She was able to finish the class with 12 climbs. She got an
A. I' m so 35 of her. 第（21）题选
A. had
B. left
C. started
D. attended