Question

【题目】I'm going to buy a new CD_________Saturday.

A. in B. on C. at D. up

Answer 1

【答案】B

【解析】在具体某一天前用介词on，如on Monday, on September 1th；在时间点前用介词at，如at 6:00；in后常接月份、年份、季节等，如in May / 2015 / Fall，in the morning / afternoon / evening为固定表达。