Some of the teacher’s roles in an interactive teaching mode classroom are:

Considering that language is a way of interaction, the more the students interact with their own peers or different groups, more chances to learn they will have. In this way, the teacher will be a teaching /learning process mediator, and his main objective will be:

“Although the EU and the US are attempting to boost the expansion of biofuels, recent evidence is equivocal about their potential.” (lines 22/23) In this sentence we have:

Fill in the blanks with the definite article and mark your option below. X corresponds to absence of article.

______ Antarctica is Earth's southernmost continent, overlying ______ South Pole. It is situated in ______ southern hemisphere, almost entirely south of ______ Antarctic Circle, and is surrounded by ______ Southern Ocean. At 14.4 million square kilometers (5.4 million sq mi), it is the fifth-largest continent in area after Asia, Africa, North America, and South America. Some 98% of its surface is covered by ______ ice, which averages at least 1.6 kilometers (1.0 mi) in thickness.

“But delegates say much ground remains.”(Line 8) The underlined verb can also be used in:

“…little faith in biofuels as a low-carbon technology…” (Line 1) The underlined word has the same meaning in:

Faster warming of the land that projects from the Antarctica towards the tip of South America has brought the following consequences, EXCEPT:

According to the text, the following is the impact of climate change on the natural world:

As to biofuels: