He is going to stay in the countryside for ( ) next month.

He is going to stay in the countryside for ( ) next month.
A、sometime
B、sometimes
C、some time
D、someday
【正确答案】：C
【题目解析】：sometime 在某一时间；sometimes 有时；some time一段时间；someday 有一天，句子含义:下个月他将在乡下待一段时间。