Fill in the blanks with the words below. Change the forms where necessary: create hibernate disappear survive allow hit experience discover block destroy 1. We that he is quite careful in his work. 2. In my memory, my parents never me when I did something wrong. 3. These poor buildings need because of the problem of safety. 4. After today’s heavy snow, many high ways . 5. In this school, students not stay out at night except in their holidays. 6. After a few minutes, the plane behind a cloud. 7. Do you know what kinds of caves the American Black Bears use in the cold winter? 8. Of the six people injured in the crash, only two . 9. I both happiness and sadness in the past 10 years when I was abroad. 10. The main purpose of trade is wealth.