选择正确单词填空

during, appointment, anxious, attempt, might, too many, symphony, crucial

1.The prisoners ______ to escape, but failed.

2. I have a datal ______ at 3 p.m.

3. There are extra trains to the seaside ______ the summer.

4. I’m very ______ about my son’s health.

5.There would be ______ people in the ______ hall.

6. Getting this contract is ______ to the future of our company.

7. If you have any idea where it ______ be, please call me.