Question

What ____ you ___(think), if your brother _____(steal) your money​

Answer 1

Answer:

I would own his property

Answer 2

Answer:

What do you think (think), if your brother steals (steal) your money​

Explanation:

in the first sentence we use think because it is singular sentence and goes with single word that is think not thinks

What do you think (think)

In the second sentence Money is plural so the word should also be plural

that is steals

if your brother steals (steal) your money​