If I ruled （统治）the world, I would _______ the world ______ everything that is bad. 

Did John ____ the general cleaning yesterday afternoon?

We know a lot about these early years of European settlement because most migrants ________ with their families and many of their letters still survive.

—What attracted you to our university?—You have a great basketball team and I can ________ for it.

We should_______ what we can afford for tomorrow’s picnic in spite of our poor living conditions.