. — You see, our plan has been totally ruined! — Dear me, I _______ his advice.

Did you see a girl in white pass by justnow—No, sir. I _____________ a newspaper.

It was along the Mississippi River ____ Mark Twain spent much of his childhood _____ the story happened. [ ]

an beings should be very careful with what we do with nature, _____power is beyond our understanding.

I was about to give up my effort to solve a problem __________ a good idea struck me