Whether the buildings in this area should be pulleddown has remained ________; people are still looking for other possiblesolutions.

What does Miss Black do at weekends– She with some students often ___________ in the playground.

It was in the factory where he was working ____I met him.

Tom is wise than smart Few people can solve such a problem but he can

The world’s population is growing ______, and there is____ land and water for growing rice.