根据句意及汉语提示，写出各单词的正确形式。
We’ll have to ______（训练）before the next match.
Our teachers often ______ (鼓励)students to ask questions in class.
The girl ______ (尖叫) when she saw the snake.
The old man is very sick. He takes a lot of ______ (药) every day.
______ (令人伤心地), many people still don’t want to take any actions to protect the animals.
It is really ______ (幸运的) for me to pass the driving exam .
Millie didn’t clean the room last week, she visited her friends ______ (代替).