The two girls are so alike that strangers find_____ difficult to tell one from the other.
_____along either bank of Huangpu River, trees and flowers added beauty to the newly-decorated bund.
— I’ve read another essay this week. — Well, maybe _____ is not how much you read but what you read that matters.
— Did you take enough money with you? — Yes, but I spent _______ I had expected.
Bad habits, ____formed, are difficult, and sometimes impossible to shake off.
Only when you leave your parents for college education _______ how much you love them.