_______ is even important is ______ as the earth cooled down, water began to appear on its surface.

So you missed the meeting． — ______. I got therefive minutes before it finished.

______Jim ______his cousin has been to America，but ________of them know the country well..

The manager has come back from his business trip. He is asking you for the report.— Oh，my god ! I haven’t finished it yet. But he ________ back at the company tomorrow.

tica holds 90% of the world’s ice, and most of itsfresh water is in a frozen .