---Did you notice someone enter the classroom just now?---Sorry, I didn’t. I _____ my lessons at that time.
The rich man _______ much food_________ the poor families in the past.
— Is Jim coming by train?—I’m not sure. He_________ drive his car.
The air in Taizhou is getting ________ cleaner now than a few years ago.
—My mobile phone dropped into the water when I was walking along the river bank.—________!
Western food doesn’t taste as nice Chinese food. But it is more expensive _____Traditional(传统的) Chinese food.