<|system|>
What is the largest four-digit number that is divisible by 4?</s>.
<|user|>
Can you answer based on context?
<|assistant|>
A number is divisible by 4 if and only if the number formed by its last two digits are divisible by 4.  The largest two-digit number that is divisible by 4 is 96, so the largest four-digit number that is divisible by 4 is $9996$.