Please don’t phone him between 1 and 3 p.m. tomorrow. He _________ a lecture then.

The old woman who______in the deserted house alone for ten years has been settled in a nursing home now.

—Do you know if the foottball game has started yet?—Started? It must be certain who ________ by now. 

—Did you enjoy meeting your old schoolmates at the party last week?—Yes, I did. We ________ each other since we graduated from college.

.Water as well as other resources ______ all over the world every day.