George once told me that he would visit our house，but，for various reasons，he________so far.

._________alone in the large house, the little boy had to learn to survive by himself.

Food will include buffalo that________________ over an open fire . 

With the rise of modern communication tools, handwritten letters ______ by emails. 

—Who do you think will get the first prize?—Mary, of course. She ________ for the competition for months.