第二节 完成句子 根据句意及汉语提示，用短语的适当形式完成下列句子。

81. Nobody would like to be friends with her. She is a person who is hard ____________.(相处)

82. All the teenagers should _________ _ (对……负责)the development of our country.

83. _________ (多亏了)our teachers’ help, I worked out the problems at last.

84. You need to learn to be independent. Don’t ___________(依赖) your parents too much.