CONDITIONAL I
If I (have ) money, I (buy) a ticket for the concert.
If I HAVE money, I WILL BUY a ticket for the concert.
Jane (get) a good mark if she (study) hard.
Jane WILL GET a good mark if she STUDIES hard.
If the students (be) hungry, they (not/pay) attention in class.
If the students ARE hungry, they WON'T PAY attention in class.