Read the short paragraph and answer the question:
"Frank the Frog was late. He had spent too much time playing in the mud by the river and now he was rushing to get to school. As he scurried along, he met a snail. 'Why are you in such a hurry?' asked the snail. Frank replied, 'I am late for school, and I can't miss my spelling test!' The snail wished him luck and Frank continued on his way."
Why was Frank the Frog in a hurry?