Question

His mother is ______. Today is his mother’s thirtiethbirthday.
A. thirteen         B. thirty          C. Thirtieth

Answer 1

B

試題分析：句意：他的媽媽三十歲了。今天是他媽媽的三十歲生日。根據后面的Today is his mother’s thirtieth birthday.可知應該是他媽媽三十歲了；故選B。