◎ 题干
– Shall we go out for lunch?
– Don’t disturb me. I ______ the letters all morning and ______ six so far.
A.write; wrote
B.wrote; have written
C.was writing; wrote
D.have been writing; have written
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“– Shall we go out for lunch?– Don’t disturb me. I ______ the letters all morning and ______ six so far.A.write; wroteB.wrote; have writtenC.was writing; w…”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。