We can no longer ____to consider water an almost freeresource that we can use as much as we like.

The boss said we had only three days to finish the work.-Don’t worry. We have already _____two thirds of it. [ ]

The US President Obama told the students that he ______ by a single mother who were strict with him and wished him great success in his studies

To discuss “population as a global __________ ”, we are supposed to know about the history of populationtrends.

What would you like ____—A glass of water, please.