He talks as if he______ everything in the world.A.knowsB.knewC.had knownD.would have known

学历类 公共英语 已帮助 人

He talks as if he______ everything in the world.

A.knows

B.knew

C.had known

D.would have known

热搜:关于氨基酸代谢错误的论述是_________。