问题补充：
he does his work, I don’t mind what time he arrives at the office.
A. So far as
B. So long as
C. As far as
D. So as
答案：
A. So far as
(答案→)B. So long as
C. As far as
D. So as
解析：短语辨析。 A.只要；就……而言 B. 只要；如果 C.至于；直到 D. 只要。句意：只要他做他的工作，我不介意他什么时候到达办公室。So long as还含有条件关系，故选B。
