Which of the diagrams below shows the air temperature of Beijing in a year?
The number of swimmers ______ getting larger and larger. Look, a number of students _____ swimming in this river.
—Why do you look so sleepy in class, John?—Sorry, sir. I _____ to watch a football match last night.
Look, the old man who is playing ______ guitar is _______ university teacher.
-- I’m afraid I have to give up my dream of being a singer.--- ___________. No dream is too big and no dreamer is too small.
--- Did Peter come to school last week?--- No, I didn’t know ___________.