The US official said North Korea — and Iran — should follow in the steps of Libya, which last December said it would work__________ to allow international weapons inspectors to do their work

_________ your mother free at the weekend— NO. She ________ has much work to do.

The number of traffic accidents that_______ in developing countries _______ increasing.

It is most ________that the experts will come to the area to investigate the possible damage caused by the heavy flood.

Did you see Tom yesterday —No, I ___________ him for a long time.