【2011乌鲁木齐】 英语完形填空第45题和第47题我选的分别是C和A，可是答案分别是A和C，为什么，求解析。

Question

【2011乌鲁木齐】 完形填空（共10小题，每小题1分，满分10分）
阅读短文，从41-50各题所给的ABC四个选项中，选出一个可以填入空白处的选项。
Mary and Donald Smith lived in the same building. Donald 41 a toy company. One day Donald gave Mary. the 4-year-old girl. a new toy. She played with it and said. "This is fun! A few weeks later Donald gave her 42 toy. She played with it and then said. "I'm not 43 in this toy. It doesn't work." For years Donald gave Mary new toys. and she gave him very good 44 about the toys.
When Mary was 13 years old. Donald showed her a new ball. Mary wanted to 45 the ball with small stones to make it 46 .The company made this change. Mary's idea was a great success! The company sold thousands of the balls.
That Christmas. Donald gave Mary an 47 gift. He made her vice-president(副总裁) of the toy company. She made $200,000 a year. Her job was lo see 48 the new toys were fun. She worked 49 three or four hours a day at her job, then she had to do her homework.
Today Mary works at a college. The little vice-president with bright ideas helps students think about their 50.
4I. A. owned B. rioted c. owns D. closes
42 A. other B. other C. the other D. another
43. A. excited B. interested C. relaxed D. bored
44. A. ways B. designs C. questions D. ideas
45 A. fill B. full C. add D. pour
46. A. noisy B. quiet C. light D. future
47. A. special B. awful C. amazing D. useful
48. A. when B. if C. as D. since
49. A.BI B. in C. for D. with
50. A. company B. toys C. homework D. future

Answer 1

45. 用...把...填充 fill sth. with sth. 将小石子放在球里，使其能发声。
47. 个人觉得A，C都行，都是形容这个礼物非同寻常。

Answer 2

因为fill 一般是和with 用的，而full是和of 一起用的，比如，be filled with 和be full of .47题，special 表示特别的，不同寻常的amazing 表示既惊讶又高兴的意思，兴奋之意，而根据文章大意理解这份礼物对于mary来说应该是既惊讶又兴奋的，所以答案是
AC