---Do you know where Mary is? ---No, I don’t. I ____ her since last Sunday night.
They won the game, _______ made their team leader proud of them.
The first thing ________ we should do is to master the basic grammar.
Diamond, _________, is the hardest of all materials.
He is not such a man ________ cares for himself only.
—Tomorrow is a holiday. Why are you doing your homework now? —I am doing these exercises so that I won’t have tomorrow. l