i have been living in the United States for twenty yearshave been living in the United States for twenty years,but seldom( )so lonely as now.A have I felt B I had felt C I have felt D had I felt我xuanD,他不是现在孤独吗,那之前不就是过
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![i have been living in the United States for twenty yearshave been living in the United States for twenty years,but seldom( )so lonely as now.A have I felt B I had felt C I have felt D had I felt我xuanD,他不是现在孤独吗,那之前不就是过](/uploads/image/z/9017083-19-3.jpg?t=i+have+been+living+in+the+United+States+for+twenty+yearshave+been+living+in+the+United+States+for+twenty+years%2Cbut+seldom%28+%29so+lonely+as+now.A+have+I+felt+B+I+had+felt+C+I+have+felt+D+had+I+felt%E6%88%91xuanD%2C%E4%BB%96%E4%B8%8D%E6%98%AF%E7%8E%B0%E5%9C%A8%E5%AD%A4%E7%8B%AC%E5%90%97%2C%E9%82%A3%E4%B9%8B%E5%89%8D%E4%B8%8D%E5%B0%B1%E6%98%AF%E8%BF%87)
i have been living in the United States for twenty yearshave been living in the United States for twenty years,but seldom( )so lonely as now.A have I felt B I had felt C I have felt D had I felt我xuanD,他不是现在孤独吗,那之前不就是过
i have been living in the United States for twenty years
have been living in the United States for twenty years,but seldom( )so lonely as now.
A have I felt B I had felt C I have felt D had I felt
我xuanD,他不是现在孤独吗,那之前不就是过去
i have been living in the United States for twenty yearshave been living in the United States for twenty years,but seldom( )so lonely as now.A have I felt B I had felt C I have felt D had I felt我xuanD,他不是现在孤独吗,那之前不就是过
是啊,他是现在觉得孤独,所以用现在完成时,还有前面一句用的也是现在完成进行时,前后两句时态应该一致.如果选D,表示过去的过去,过去完成时.