【单选题】
            
 Alone in a deserted house, he was so busy with his research work that he felt______lonely.
A.nothing but
B.anything but
C.all but
D.everything but
        
        
			
            
            
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				根据网考网移动考试中心的统计,该试题:
1%的考友选择了A选项
28%的考友选择了B选项
2%的考友选择了C选项
69%的考友选择了D选项