—What made you so tired?—__________ driving all day.
The Smiths ______ their breakfast when the doorbell rang.
The majority of doctors ______ smoking is harmful to health.
EitherJimorI ____goingtohelpthefarmerswiththeorangeharvestthisafternoon.
A good deal of money ____spent on books.
It ____I who _____leaving for London.