贼难的英语啊1-He did the work without any __(difficult)2-My son's

贼难的英语啊
1-He did the work without any __(difficult)
2-My son's __ to change another job surprised us all(decide)
3-Nancy is a clever girl.She is not easily __(foolish)
4-I am going to the doctor for a __(check)
5-They __ have lunch at school.(general)