题目内容：

阅读下列各小题，根据括号内的汉语提示，用句末括号内的英语单词完成句子，并把答案填写在答题卷相应的位置上。

1.The officials examined the food to make sure it ______________ (没有) poison. (free)

2.I’m sure Jack ______________ (将取得很大的进步)in his studies in high school with Susan’s help. (progress)

3.The boss ______________  (对……留下印象) John’s hard work so he was promoted to a manager. (impress)

4.A large sum of money ______________ (捐献) charity by the chairman up till now. (contribute)

5.His father was encouraged to ______________ (戒烟) for the health of his family. (quit)