Millie often goes to school by bus but her mother drives her to school.
A. sometimes
B. some times
C. sometime
D. some time
网友回答
(答案→)A. sometimes
B. some times
C. sometime
D. some time
解析：some time表示一段时间; sometime表示某时; some times表示倍数,次数; sometimes表示有时.整句理解为: Millie经常乘公共汽车去上学,但有时她开车送她去上学.所以选A。