I'm tired out. I all afternoon and I don't seem to have finished anything.
—Shall we have a smoke here? —No, we _____ because this is gas station and the worker is carrying some petrol.
—Linda, I have to stay at school and take some courses next month, how about you? —I ____ to Canada at this time next month since I have got the visa.
—What do you think of teaching? —I find it fun and demanding. It is a job____ you are doing something serious but interesting.
—Our teachers and parents always warn us not to smoke. —Yes, actually, the risk of heart disease is a powerful argument ____ smoking.
George couldn't remember when he first met Mr.Anderson, but he was sure it was___Sunday because everybody was at__church.