____ they ____ on the train

Remember this, John. ________ you work, ______grades you’ll get.–Thanks, Miss Rose.

didaccident happen—Oh, it was onSunday towards the end of this summer, as far as I can remember

Compared with the nervousness of driving in the rain or snow, it is ______ to sit in a train without any worry of bad weather.

Are Mr and Mrs Wang living alone in the house—Yes, they have three sons, but______of the sons live with them.