答案：C

C。that在此表远指，又如：That day we visited an old house. That’s where he spent his last years. 那天我们去参观了一座老房子，那就是他去世前几年他住的地方。这类句式如果改用this，则表近指，如：This is where the river is deepest. 这是河流的最深处。 This is where we change from car to bus. 这就是我们从小汽车换乘公共汽车的地方。