【2015•湖南】When the clerk saw a kind face wrinkled in an apologetic smile, she stood rooted to the ground, ________ whether to stay or leave.
_______ 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.
______ you return those books to the library immediately, you will have to pay a fine.