IF - Homework 5th. grade

Hi guys,
These are the instructions for your homework:
1. Read the poem "If"
2. Does this word mean an affirmative answer or a condition?
3. What is the tense of the verb in the "If" sentence?
4. There are two sentences, one: If you can talk with crowds and keep your virtue.......
which is the second sentence?
5. What is the poem about?