Thank you so much for ________ me find mybook.

The question that puzzled them is ____ they can getrid of the air pollution in the area.

It may not be a great suggestion. But before ______one is put forward, we’ll make do with it.

___ from other continents formillions of years, Australia has many plants and animals not found in any othercountry in the world

－Whereis that report? －I brought it to you you were in Mr Black’s office yesterday[ ]