in the 1980s是指哪几年

in the 1980s是指哪几年 The story took place in____A.1978B.1978'sC.the 1970's为什么不行啊.In 几几年 可以啊 in 1980/in 1980s / in the 1980 / in the 1980s / in the 1980's/in the 1980' in the 1980s,in the 1980's和in 1980s的区别 in 1980's 与 in the 1980's的区别 in the 19th 和in the 1980's 是in1980s还是in the 1980s in the 1980s 是什么时候? in the early 1980s的意思 in the late 1980's怎么翻译 in the cat,s In the stationary’s in the 1980s 中的s发声吗? in the 1980s 与 in 1980的区别 Great changes happened in China in the 1980s翻译 in the 1980s与in the 1980's一样吗 in the 1980s和in the 1980's是不是都对的?有差别马? in the in the 1720's呢?