◎ 题干
Ever since he caught the N1H1, Peter _____ so much pain that he is coughing day and night.
[     ]
A. suffered from
B. has suffered from
C. suffers from
D. were suffering from
◎ 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“Ever since he caught the N1H1, Peter _____ so much pain that he is coughing day and night.[ ]A. suffered fromB. has suffered from C. suffers fromD. were suf…”主要考查了你对  【现在完成时】  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。