_____________(不论晴雨)，we'll have to go tomorrow.

　　答案：Rain or shine

　　解析：本题考查固定用法"不论......"，英语用...or...来表达。如：Winter or summer，that lady always wears a long black gown.(不论夏冬，那个老妇人总是穿一身黑色长袍。)类似的表达还有：better or worse，good or evil，sink or swim，men or women，old or young。