BT anh 12 thí điểm Unit 4 - KEY - Unit 4. THE MASS...
#039;s go and see Roger. We last ___ him a long time ago. A. had - saw B. have - saw C. have - see D. have - had seen 29. It's nice to be back here, in London. It's the second time I ___ here. A. am coming B. have come...