第1个回答 2021-09-27
He have finished task in the last month 。
第2个回答 2021-09-25
By the end of last month, he has to complete the task.
第3个回答 2021-09-25
He had finished the task by the end of last month
第4个回答 2021-10-07
He had finished the task by the end of last month