My brother has to finish his homework. I’ve been trying to help him it, but I got stuck in this part of it. We’re not native English speakers.
“We’re going to have some trouble downtown if _________ doesn’t stop soon. ______ it rains ________ chance we have of a _________.”
The related vocabulary: flood, flooding, rainstorm and horrendous.
What’s causing me trouble is this part, which makes no sense to me: chance we have of a.
Thanks for your help.