5．He is so s________ that nobody can change his mind．

4．Can you say some d________ of that accident? I want to know more.

3．The teacher is a h________ person，he often tells jokes to us．

2．He ________ （解释）to me why he was late that morning．

1．Don't worry．The answer can be________ （可找到的）in the textbook.

9．炫耀____________________           10．额外的工作________________

7．担心不做________________           8．在实验室做实验____________

5．勤奋工作的人____________              6．有时______________________

3．放弃做……______________               4．推荐……做________________

1．被划分为________________            2．与……相似________________