HiJackDoyouknowwhatt的精選

問題詳情：補全對話 A：Hi,Jack.DoyouknowwhattheFourInventionsare? B:Yes,IhavejustlearnedaboutthemfrommyChineseteacher.1  A: 2  B:Theyweregreatinventionsatthattime. 3 Theyaregreatgiftstotheworldfro...