Because of too many differences between the two sides, a lot of questions are still left ________.A in the air B on the air C by the air D through the air
. 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.
All but one ______ here just now.