一、根据句意及汉语提示完成单词
1. The beautiful scenery there is （值得）watching carefully.
2. I felt （对……感到惊慌的）when I heard a loud noise last night.
3. Wendy often talks about her （青年时期）with her friends.
4. Teachers always （警告）us not to run in the classroom.
5. This （组织）helps collect clothes for children in poor areas.

1. worth
2. scared
3. youth
4. warn
5. organization

二、用括号内所给单词的适当形式填空
6. Let's ask (we) whether we have tried our best before giving up.
7. We can have a (joy) life if we learn to be thankful
8. My little brother (throw) a football, which hit the window and broke it.
9. We thought the exam would be difficult, but (surprising), most of us did very well.
10. My friend gave me a good (suggest) to prepare for the exams.

6. ourselves
7. joyful
8. threw
9. surprisingly
10. suggestion

三、从方框中选短语并用其适当形式填空

11. True friends will always help you when you are .
12. Many students for sports games to challenge themselves.
13. Please hurry up, or you can't arrive there .
14. My grandma walking in the park after dinner.
15. The fire alarm all of a sudden in the building last night.

11. in need
12. sign up
13. in time
14. is used to
15. went off

四、按要求完成下列句子
16. When the alarm rang, my mother was cooking.（用 while 改写）
my mother , the alarm rang.
17. I was sleeping while it was raining heavily.（对画线部分提问）
you while it was raining heavily?
18. I will not believe it if I don't see it with my own eyes.（改为同义句）
I will not believe it I see it with my own eyes.
19. We have learned many English words so far.（改为一般疑问句）
learned many English words so far?
20. Lily cleans her bedroom every five days.（对画线部分提问）
does Lily her bedroom?

16. While; was cooking
17. What were; doing
18. unless
19. Have you
20. How often; clean