单选题
______ he works hard, I don't mind when he finishes the experiment.
A. As soon as B. As well as C. So far as D. So long as
【正确答案】
D
【答案解析】[解析] so long as可作“只要”讲，引导条件状语从句。as soon as意为“一……就……”，引导时间状语从句。as well as则作“不仅……而且……，既……又……”讲。so far as一般用在so far as...be concerned中，意为“就……而论”。