Question

【题目】I have to start off early every day ______ I can catch the train.

A. unless B. since C. as soon as D. so that

Answer 1

【答案】D

【解析】试题分析：句意：为了能赶上火车我必须每天很早出发。 A. Unless除非；B. Since自从；C. as soon as一……就……；D. so that为了。根据句意及语境此题应选D。