---Which book do you think is the most useful to my studies?---________, as long as you read it. In fact, they are out of date.
. If my lawyer _________ here last Saturday, he _______ me from going.
. If he ________, he _________ that food.
He is the only one of the students who _____ a winner of scholarship for three years.
The Smith’s family, which ____ rather a large one, ____ very fond of their old houses.
When and where to build the new factory _____ yet.