By the time I swa the angry expression on his face, I ______ exactly what I was having to face. But not for a moment _______ I should quit.
Has ________ been decided when we are to hold the sports meeting?
—Who knocked at the door? —I’ve no idea. I just pretended nobody was at home, so I didn’t ask who ________ was.
The doctor kept telling him that he mustn’t smoke, but ________ didn’t help.
Don’t leave your keys in the car. Someone might steal ________ 。
Computers must be of great use to ________ doing the scientific research.