With an appropriate conjunctive: (1)My name is Robert, _most of

With an appropriate conjunctive:
(1)My name is Robert, _most of my friends call me Bob for short. (2)You must work hard, you will not learn English well.
【正确答案】：but otherwise/o
【题目解析】：【考点点击】本题考查连接词。【要点透析】句子中表示转折用 but otherwise/or作连词时,意为“否则,不然”,引导条件状语从句,符合题意。