Until you learn how to take a break, you ____ your ability to speak English.
Until you learn how to take a break, you ____ your ability to speak English.
Explanation
Won't improve means بہتری نہیں آئے گی
"Won't improve" is the correct choice because it refers to a future outcome dependent on a present action (learning to take a break).
The sentence implies that if you don't take breaks, your ability to speak English will not improve in the future.