题目内容：

从方框里选择合适的词，根据句子的意思，用其适当形式填空。

possible     refuse      use       worry       her

1.David was badly hurt in the accident, so we were very _______ about him.

2.Lily’s family can’t afford her education. So she always teaches _______.

3.They invited me to the party, but I had to________ because I was very busy.

4.It is bad for our eyes to watch TV too much . I think it’s ________ true.

5.Did she ________to have long hair when she was in Grade Seven?