President Obama and his team of administration promised to try every means possible to_____ 3,500,000 jobs and_____ the goal of recovering its economy as soon as possible.[ ]

I ______ the streets in our neighborhood this time yesterday when you called me.

What do you know about Darwin after he returned from the trip by sea? — Well, he got married and ____ down to live in Kent. [ ]

There are so many kinds of Mp3 in theshop. We can’t decide ________ .

____________ a flat in Qingdao, he also has a house in Beijing