We are sure one day the air in Beijing will be much ______ than today.
It was a bitter __________ when they decided not to give him a second chance.
Mother said no. She didn’t even ___ me to explain the reason behind the decision.
Before 2003, there was no direct airline _____ Taiwan and the mainland.
Her father has __________ greatly since she saw him last time.
I wanted to explain, but you didn’t give me any ________.