--_________is the population of the world ? --_________about 7 billion.A. How many; It’s B. What; It’s C. What; They’re
I _______ you a ring if I hear anything.
If you don’t go hiking, ____ I.
We’ll stay at home if it ______ this afternoon.
He decided to study hard__________ catch up with others.
This dress still looks pretty on you, _______ it is out of style.