题目内容
-- Tom says he is too tired to go on.
-- He can’t. He ________ for an hour.
A. had worked B. has just worked
C. just worked D. has only been working
练习册系列答案
相关题目
题目内容
-- Tom says he is too tired to go on.
-- He can’t. He ________ for an hour.
A. had worked B. has just worked
C. just worked D. has only been working