一、根据句意和所给的中文提示,写出句子中的单词
1.Keep trying and I'm sure you'll make ________ (进步).
2.My father often ________ (鼓励) me to study hard.
3.Five ________ (德国人) visited the factory the other day.
4.There are more than three ________ (千) students in this school.
5.I think ______ (春天) is the best season of a year.