It is fashionable to drive a car, but to drive a car is not nearly as difficult as it is imagined on condition that you ______ the specialized rules.
Professor Zhang gave all the textbooks to all the pupils, except ________ who had already taken them.
Although he sometimes loses his temper, his students like him ________ for it.
.________ all over the hills and around the lake are wild flowers of different kinds.
I think that this meal was well worth ________ was charged for it.
—The experiment is of particular importance. —I see. We will carry on with it ________ we can get enough money.