To avoid the ecological issues, scientists and government agencies consider how sustainable development _______.

Ever since Girish won the prestigious Infosys prize, he has been behaving _______________________.

The new car has disappointed its buyers in many ways, and good mileage is its only ___________.

During the debate, when the minister appeared to be vague about his stand on the controversial energy project, his opponent asked him to ___________ and declare outright if the government would go ahead with the project or not.

We had tried so hard to keep Maya's birthday party a surprise, but at the last minute someone _________ .

Deepak is an unpleasant person, but we all ____________ because his sister is a close friend of ours.

Flying this simple aeroplane is a ________________ for the experienced pilot.