单选题Only since they gave&nbsp

问题补充：

单选题Onlysincetheygaveupthatgoodchance＿＿＿toshowtheirinventionagain.A.have they had no chanceB.they have had no chanceC.they have no chanceD.have they no chance

答案：

A解析句子中only修饰since引导的时间状语从句置于句首，主句用部分倒装形式。