On hearing a great noise, Mike looked forward through the window _____ what happened outside the room.
The teacher demanded all the exercise books ______ the next day.
______ I could say a word, she had stormed out of the room.
One of the best ways for people to keep fit is to ______ healthy eating habits.
I’m sorry to say you didn’t pass the exam-- ______, you won’t receive the diploma.
—John, why are you so tired? —I ______ pingpong with Jimmy.