The umbrella is not a new invention. The Chinese ___濵mbrellas in the eleventh
century B.C.
选项有
A. have had
B. had
想请问为什么a不能选？中国人在11世纪“已经”有雨伞了

https://tinyurl.com/yyq3zo44 找 常见的错误一

https://learnenglish.britishcouncil.org/english-grammar-reference/perfect-aspecthttps://english.stackexchange.com/questions/4870/when-is-it-necessary-to-use-have-had我觉得题目不好 have had umbrellas since the 11th centryHad... in 11th centry是暗示现在没有雨伞吗？