1. When              the car              (invent)?
2. I want to go somewhere              (relax)
3. A stranger was seen              (go) into the teacher's office by the girl.
4. Knocking into players and falling down would be             . (danger)
5. The coat is used for              (keep) water away.
6.             (be) a volunteer is great.
7. I fix up bikes and give              (they) away to children.
8. I love places where the people are really              (friend)
9. I love singers              (whom) write their own music.
10. Teenagers should              (allow) to choose their own clothes.

1. When              the car             (invent)?
2. What do you think              (be ) the most helpful invention?
3. A stranger was seen              (go) into the teacher's office by the girl.
4. Knocking into players and falling down would be              . (danger)
5. I am              (save) my money so I can buy a new bicycle.
6.             (be) a volunteer is great.
7. I fix up bikes and give               (they)away to children.
8. I love places where the people are really              (friend)
9. I love singers              (whom) write their own music.
10. Teenagers should              (allow) to choose their own clothes.

1. 父母认为送孩子去夏令营有三种最主要的好处。
Parents rated the                                                                                                                                                their children to camp.
2. 做志愿者是一次提高自信的机会。
To be a volunteer is an                                                                         self-confidence.
3. 应当给孩子们一些自由的时间以便他们能恢复活力。 
The children should be given free time                                                  they will                                                 .
4. 这些技能将会贯穿他们的孩提时代直至进入成年。 
These skills will                                                them                         childhood and into adulthood.

1. He asked these students volunteer in the after-school study program.                  ___________
2. My uncle wants to help the poor people in the city by set up a food bank.           ___________
3. Some of my classmates volunteer to sing for the old people to cheer up them.     ___________
4. What do you think could I do for you?                                                               ___________
5. Be a volunteer is great.                                                                                       ___________