I think you should complain — ______, of course, you are happy with the way things are.
______ for half a month, the town was running out of food and clothing.
_______ for the coming examinations before, I have no time for the film.
The books _______ belong to Mr. Smith.
How little Franz regretted the days ______ playing in the woods and fields.
They _____ be at home. You see, the door is locked from the outside.