i don't study English last night, but i( ).

应该是should have studied你打错了这个选项吧

should have done才是“本应做某事而实际上没有做”这个句型

题目错啦，应该是didn't。
选C，表示我本该昨晚学习英语的。

C
don't应当是didn't

C·should +过去分词表示应该做而没做·