17. That's too ____for swimming.
A) a shallow lake B) a lake shallow C) shallowa lake D) lake shallow
18. It isn't _____job for me to do alone.
A) easy enough a B) an easy enough C) enough an easy D) an enough easy
19. That's too ____ for me to carry.
A) heavy a suitcase B) heavy suitcase C)a heavy suitcase D) a suitcase heavy