The government forbids ______ such bad books.
— Dad, would you please buy some strawberries for me? I love them.— I'd like to, but they are not _____ in winter.
—Do you know where David is? I couldn't find him anywhere.—Well, he ______ have gone far—his coat's still here.
She is getting better, but it will be some time ______ she is completely well.
The computer centre, ______ last year, is very popular among the students in this school.
______ in thought, he almost ran into the car in front of him.