Young people _______ wearing jeans ________ this .
___________ it snows, ____________ the children feel.
Luo Yang devoted all his life _________for China Nation Aviation(中国航天).
______ the age of 89, he passed away ______ a cold winter morning.
I don’t know if my uncle_______. If he______, I will be very happy.
It is _______easy work _____ we can finish it in a short time .