单选题 The students ______ their papers by the end of this month.
A. will have finished B. have been finished
C. have finished D. will finish

【正确答案】 A

【答案解析】[考点] 时态
[解析] 本题解答的关键在于句末的by the end of this month，“by”一般用于完成时态，所以可以得出，这个句子考查的是将来完成时的用法，即will have done sth.，故选A。