题目内容：

根据首字母提示和句意，在空白处填入1个适当的单词或括号内单词的正确形式。

1.Whom would you like to have ______ the children?（逗乐）

2.With key ______in this field, the company gains an advantage over other companies.（突 破）

3.Word comes ______the princess will get married to a violinist.

4.There are just two rooms on the second floor, the ______of which belongs to me. （凌乱）

5.I ______felt fortunate to have cooperated with such an experienced expert. （难以置信）

6.It was the first time that the company ______its cars from the market.（撤回）

7.______a terrible accident, she becomes scared of driving a car.（目击）

8.Great significance should be attached to ______natural resources.（保存）

9.Her speech was greeted with thunderous ______.（掌声）

10.Speed is restricted ______30mph around a school.