Professor Smith is said ______ another important discovery in chemistry.a.having made b.having b
问题描述：
Professor Smith is said ______ another important discovery in chemistry.a.having made b.having b
Professor Smith is said ______ another important discovery in chemistry.
a.having made b.having been made c.to have made d.to make
答
make discovery 是一个短语.其中的have 只能做时态来看 应该是A吧
having done