单选题 — Where have you been?
— I got caught in the traffic; ______ I would have been here sooner.

【正确答案】 D

【答案解析】[解析] 转折词otherwise意为“否则，要不然”，例：You'd better hurry up, otherwise you won't catch the train(你最好快点，否则赶不上火车)。