We’d better __________ when he is thinking, as he prefers to solve problems on his own．
A.wake him up
B.keep him away
C.leave him alone
D.call him up
网友回答
C解析由后半句说“他喜欢独自解决问题”可知前半句是说“当他思考问题的时候不要去打扰他”。leave sb．alone意为“不打扰某人；让某人独自呆着”。而A项意为“把某人叫醒”；B项常用作keep sb．away from…，意为“使某人远离……”；D项意为“给某人打电话”。