1.   You must have a valid excuse for any absence.

2.   She had no valid excuse for not finishing her homework.

3.   But that is not a valid excuse.

4.   And is it a valid excuse?

5.   Finally, middle age is no longer a valid excuse for adding a few pounds.

6.   In June, he skipped a voluntary summer camp without a valid excuse.

7.   It is a valid excuse to lean forward in your seat.

8.   No valid excuse from Gailey or anyone else at Valley Ranch, about the absence of Michael.

9.   The Giants said Peter had not missed a session and if he does miss one without a valid excuse he will be released immediately.