I knew __ a _ certain John Brown, but not ___ famous one.
EitherJimorI ____goingtohelpthefarmerswiththeorangeharvestthisafternoon.
A good deal of money ____spent on books.
It ____I who _____leaving for London.
“You” _____ a very useful word in English.
_____ were nice to me when I was in the United States.