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】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。