--- How I wish I had studied harder when I was in senior school! --- If you had, you a university student now.
Yesterday I witnessed ____ car hit a tree and ___ driver was killed.
He kept yawning in class this morning. That is _____ he stayed up late doing his homework last night.
I want to show you is my gratitude and respect for your continuous and selfless help.
______ we have confidence and determination, we can win the match.
In those years, poverty ______, hungry farmers wandered about the countryside.