1 . It is not surprising that young people are likely________(burst) out, particularly when there are reasons to do so.

2 . I fell for their trick, so all the naughty boys ________(大笑起来) at me. （根据汉语提示完成句子）

3 . Upon hearing the funny story, everybody ___________(爆发) into laughter. (根据汉语提示单词拼写)

4 . Hospital staff ______(爆发)into cheers after doctors completed a 20-hour operation to have separated one-year-old twins at the head. （根据汉语意思填空）

5 . Directions: Complete the following sentences by using the words in the box. Each word can only be used once.

A. drowned　　　B. machinery　　　C. shocked　　　D. forced　　　E. suffering F. originally　　　G. mask　　　　　H.released　　　I. restored　　　J. burst

1. You must wear goggles and a ________that will protect you against the fumes
2. They began to recover slowly from their nightmare of pain and________.
3. She was so________ at the news that she could hardly utter a single word.
4. Every year, tourists are drawn to the beautifully________ old town square.
5. His words were ________out by loud cheers and big applauses from the audience.
6. The castle was________ surrounded by three walls, only one of which remains.
7. Worse still, her own father, whom she had depended on, had ________her to leave home after he learned about her condition.
8. For some unknown reasons, one of the boys struck a match and in an instant the room________ into flames.
9. All the prisoners of war were________ and they returned to their home countries.
10. Manufacturing ________is being introduced into the factory to save human labor.