The umbrella is not a new invention. The Chinese ___濵mbrellas in the eleventh
century B.C.
選項有
A. have had
B. had
想請問為什麼a不能選？中國人在11世紀“已經”有雨傘了

https://tinyurl.com/yyq3zo44 找 常見的錯誤一

https://learnenglish.britishcouncil.org/english-grammar-reference/perfect-aspecthttps://english.stackexchange.com/questions/4870/when-is-it-necessary-to-use-have-had我覺得題目不好 have had umbrellas since the 11th centryHad... in 11th centry是暗示現在沒有雨傘嗎？