Відповіді: Стр.45 (a)

A. Complete the blanks.

42^nd fourty second 31^st thirty first

56^th fifty sixth 16^th sixteenth

78^th seventy-eight 4^th fourth

23^rd twenty third 12^th twelfth

18^th eighteenth 100^th one hundredth

75^th seventy fifth 87^th eighty seventh