We check if it is divisible by $$4$$ by looking at the last two digits.  $$72$$ is divisible by $$4$$. 
If the 9-digit number $$2017122\square2$$ can be divisible by $$4$$, then the number in $$\square$$ can be ． 

1. $$0$$ 
2. $$2$$ 
3. $$4$$ 
4. $$7$$ 
5. $$8$$ 