It was ____ the old worker came that we ____ the experiment.

It suddenly_____ to me that I could use a computer to do the job

ldren are asked to help with housework, they will feel needed. ______, they will learn to take care of themselves.

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

The workers are talking about the doctors and the offices ____ they visited yesterday.