Here are some exercises on the definitions (or descriptions) of the phonemes. There is an (a) file with the exercise and a (b) file with the Answers for each number. Do the (a) file exercise first and then check your answers with the (b) file. Remember that for the definitions of vowel phonemes, 'high' and 'close' are the same thing and 'low' and 'open' are the same thing. The exercises use 'high' and 'low', but your teacher may have used 'close' and open'.