in the 1950s 还是in 1950s

in the 1950s 还是in 1950s in the 1950s还是in 1950s in 1950 ,in 1950s,in the 1950s,in the 1950's,in 1950's这四个短语都 in the 1990s'还是in the 1990's 是in the 1980's还是in 1980's in early 1990s还是in the early 1900s? in 1990s还是in the 1990s IN 1960S 还是IN THE 1960S in the 1950s和in the 1950和in 1950s和in 1950's的区别. 是in1980s还是in the 1980s 是in the barber's 还是at barber's in the cat,s