根据句子意思和所给的首字母写出所缺单词。要求在答题卷上写出完整的单词。（每空只写一词）
Most people will feel h_____ when they are away from their homes for a long time.
Whether to go or not. It’s difficult for me to make a d___________.
We hope our f__________ will last forever.
He works hard every day. I think he will a_________ his ambition one day.
The student not only learn k______ from the textbooks but also from different activities.