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
【正确答案】：B
【题目解析】：nothing but只有；anything but根本不，绝不；all but几乎，差一点；everything but除了句意：他独自一人待在一所废弃的房子里，忙于研究工作，一点也不感到孤独。
