_______ you are familiar with the author’s ideas, try reading all the sections as quickly as possible.
Sarah pretended to be cheerful, nothing about the argument.
Some forms of algae have to growing on ice.
Antarctica holds 90% of the world’s ice, and most of its fresh water (70%) is in a frozen .
She has a lot of things, so she knows exactly how to deal with such a person.
Parts of the cave have been badly affected by rain andto the air.