His plan ＿＿＿＿＿ to be a perfect one. A. provedB. was proved C. is provingD. proving

发布时间：2020-08-17 12:58:35

His plan ＿＿＿＿＿ to be a perfect one.
A. proved
B. was proved
C. is proving
D. proving

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(答案→)A. proved
B. was proved
C. is proving
D. proving
解析：prove为系动词，意思是“被证明是”，其后跟“（to be）＋形容词﹑名词等”作表语。
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