Question

【题目】His mother took him to visit the Great Wall on his ________ birthday.

A. nineB. ninethC. ninth

Answer 1

【答案】C

【解析】

句意“他的妈妈在他9岁生日时带他去参观长城”。空后birthday生日，可数名词单数，所以空处用序数词，排除A。ninth第九，B选项单词拼写错误。故选C。