Directions: Fill in the blank in each of the following statements with one word, the first letter of which is already given as a clue. Note that you are to fill in ONE word only, and you are not allowed to change the letter given.

Double a refers to the property of language which means language is composed of discrete units at two levels. At the lower level there is a structure of sounds, which are meaningless. At the higher level there are morphemes and words, which are meaningful.