The traffic is becoming more and more terrible because of the______population.

ary is crazy about shopping. She mustbe snapping up the bargains in the department store during such a sale, ______

Had it been possible I would have gone to the movies but I ________ too busy.[ ]

I saw him crossing the street. The sentence structure is _______.

He has given me so much help that I really want to do something for him ______.