1 . Teenagers should try to be ________ (depend) of their parents, doing something on their own. (所给词的适当形式填空)

2 . As an engineer, it can be quite ________ (stress) at times, which in turns makes me feel anxious. (所给词的适当形式填空)

3 . We had to choose another way to keep us free from ________ (poison) snakes’ attack. （所给词的适当形式填空）

4 . When she is u______, she may want a hug or to be left completely alone. (根据首字母单词拼写)

5 . There is a general awareness that smoking is ______(harm) to your health. (所给词的适当形式填空)

6 . People who make 7 dollars an hour cannot find an ______ (afford) place to live in the country. (所给词的适当形式填空)

7 . Once a week, we do a big shop and buy a lot of ________ (freeze) food.（所给词的适当形式填空）

8 . The __________ (平均的) age of the boys in this class is fifteen. (根据汉语提示单词拼写)