1 . Over thousands of years, they began to depend less on ________ could be hunted or gathered from the wild.（用适当的词填空）

2 . I'm wondering ____________ one I should choose: the Acting club or the Ballet Club? (用适当的词填空)

3 . She was not aware _____ she had done wrong.（用适当的词填空）

4 . In order to encourage the workers to work hard, the manager decides to award _______ produces the most in the factory. （在句子的空白处填入适当的引导词。）

5 . Some children want to challenge themselves by learning a language different from ____________ their parents speak at home. (用适当的词填空)

6 . Cindy shut the door heavily and burst into tears. No one in the office knew_______ she was so angry. （在句子的空白处填入适当的引导词。）

7 . The teacher usually graded the students on _______they have done. （在句子的空白处填入适当的引导词。）