___ an engineer,so he know exactly what to do.a.Being b.Having be_英语解答

___ an engineer,so he know exactly what to do.
a.Being b.Having been c.As d.He is
选择哪个?怎么分析?

人气：180 ℃　时间：2020-04-25 21:05:56

解答

选d,因为后面so.这个是一个完整的句子,所以前面的就应该是一个句子,只有d符合,如果去掉so,就可以选a或c