Mr. Black ______ my art teacher last term, but now he ______.A. was, isn’tB. is, isn’tC. was, wasn’t
— How about talent show? — I should say it was great success.
—When will the 2010 World Expo(世博会) come to a close? —It’ll close at the end of ________.
—Why didn’t Betty come to school yesterday?—_________ she was ill.
—Can you come to my party on Saturday afternoon? —___________. I’ll have to help my parents.
—Meat isn’t really dangerous, is it? —Oh! _________! It’s not at all good for our health.