At that time,things____hard for the working people.A.is B.are C.was D.were

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at that time 用法 at that time at what time at that time呢 at the time when/that at that time等于什么? at that time与at this time的区别 at that time和at the time的区别? at that time 和 at the time的区别? at that moment ；at this moment ；at this time ；at that time分别用什么时态? during that time与at that time有什么区别? by that time 与at that time 区别? at that time和at that moment 有什么区别? at that moment和at that time区别帮帮忙 at that time和at that moment 有什么区别? at the time=at this time=at that time 对不对? at the time、at that time与at this time的语用含义 At that time…如何翻译? what will happen at that time?对么