In the north of China, leaves usually fall down when a comes.
The teachers welcome their students (polite) at the school gate every morning.
After doing sports for months, Tina is becoming (thin) than before.
Forty (year) development has changed Huai'an into a modern city.
To my surprise, my uncle got his driving licence in his (fifty).
Andrew often does DIY with different (knife) in his free time.