Many people have got the habit of buying flowers for their mothers on .A. Mothers’ DayB. t

问题补充：

Many people have got the habit of buying flowers for their mothers on .

A. Mothers’ Day

B. the Mothers’ s Day

C. the Mother’s Day

D. Mother’s Day

答案：

A. Mothers’ Day

B. the Mothers’ s Day

C. the Mother’s Day

(答案→)D. Mother’s Day

解析：句意，许多人有这样的习惯，就是在母亲节的时候，为他们的母亲买鲜花。固定用法，母亲节是Mother’s Day。