آزمون آنلاین انگلیسی 3 - درس سوم | آزمون شماره 385

The researchers have repeated the experiments on rats. The outcome of them ......... after three months.

They know much information .......................... when somebody reads a text and pays close attention to the key point.

Every year a lot of Ecotourists travel to the pole to see and take a picture of icebergs , polar animals and ...................... of global warming on glaciers.