He was so deep in thought,thinking of the problem ________ he knocked into the tree without noticing it.
_______ fun it is to jump into a pool or go swimming in summer.
_______ is it _____ has made Peter _______ he is today?
Many people apply ___ the position as a salesman in this company.
Sometimes there are papers or books to collect or to ___.
--Andrew won’t like it, you know.---_____? I don’t care what Andrew thinks!