. There is such an occasion ___________ we know lots of words, but we can’t choose a suitable one to express ourselves.
. I _____ your last point — could you say it again?
_______ she was invited to the ball made her very happy.
They won’t buy any new clothes because they _____ money to buy a new car.
People have heard _______ the President has said; they are waiting to see _______ he will do.
I left my pen on the desk and now it’s gone; who _____ it?