--Who is the old man talking with your teacher? ---I don’t know. I him before.
Everything he _____ to his country.
Road accidents victims____ almost a quarter of the hospital patients.
his composition was so confusing that I could hardly make any ____ of it.
we must ___ to the public the simple fact that drug are dangerous.
Not until I was standing on the edge of death ____ how much I wanted to live.