His plan ____to be a perfect one.A proved B.was proved C. is

His plan ____to be a perfect one.A proved B.was proved C. is 一：Their plan ____ to be a perfect one.A.proved B.was proved选 His theory___to be true. A.proved B.was proved C.is proved D 选哪个,请给出原因.A.proving B.proved C.was proved D.has been proved plan A have proved to be a failure. As it happened,my advice _____to be wrong.A.proved B.was pro ______ was his advice that it proved to be worthless. 英语翻译Rose's sprain proved to be a serious one,owing to neglec A fact is sth that can be proeved This has proved to be corr Such advice _A_she was given proved almost worthless. A as B a fact is anything that can be proved.为什么是anything不是somethin ____to what I thought,he has proved to be successfull