Our teacher often tells us _____ to the old politely .
My father was watching TV the earthquake happened.A、as soon as B、while C、when
Would you mind here?A、don’t smoke B、not smoking C、not to smoke
—He didn’t finish his homework, did he?— . He will finish it in an hour.A、No, he didn’t B、Yes, he did C、Yes, he didn’t
—Do you know when back?—I don’t know. But if he back, I will call you.A、will he come, comes B、he will come, comesC、he comes, will come
—Hello! Could I speak to Mrs Brown?—Sorry. She the supermarket.A、has been to B、went to C、has gone to