Question

【题目】 --What people often do Christmas?

--They give presents to each other.

A. do, on B. does, at C. do, at

Answer 1

【答案】C

【解析】people是复数，助动词用do，在圣诞节是at Christmas，句意为人们在圣诞节通常做什么？他们送礼物给彼此。