根据句意和首字母，写出各单词的正确形式。 小题1:The teacher say

问题：

根据句意和首字母，写出各单词的正确形式。

小题1:The teacher says I have to learn grammar again because I always make m_______ in grammar.

小题2:Nothing is impossible if you put your h        into it..

小题3:This problem is very difficult. He can’t solve it e_______.

小题4:The s______ of success is hard work.

小题5:As teachers, we should be p          to help students.