you,west,describe,lucky,once It's not easy _____ what I saw.
问题描述：
you,west,describe,lucky,once It's not easy _____ what I saw.
It's not easy _____ what I saw.
The boy fell into the river._____,a driver saved him.
Did you enjoy ____ at Simon's birthday party?
I have the music class ____ a week,only on Tuesday.
My brother likes _____ food,like Pizza and hot dogs.
答
to describe,Lluckily,yourself,once,western