◎ 题干
—Tom says he is too tired to go on.
—He can’t be.He ____for an hour.
A.just worked
B.has only been working
C.has just worked
D.had only been working
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“—Tom says he is too tired to go on.—He can’t be.He ____for an hour.A.just workedB.has only been workingC.has just workedD.had only been working…”主要考查了你对  【一般现在时】【将来进行时】【过去完成进行时】【过去将来时的被动语态】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。