单选题 The boy has ______ the local accent while staying with his grand parents in the countryside.
【正确答案】 B
【答案解析】[解析] 本题考查动词词组辨析。save up“存(钱)”；show up“出现”；mix up“混合”；pick up在此处是偶然获得或学习的意思。故选B。