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-Why was Professor Smith unhappy recently?-Because the theory he stuck to wrong.A. provesB. was prov

编辑:chaxungu时间:2026-04-27 03:00:57分类:高中英语题库

【题目】—Why was Professor Smith unhappy recently?

—Because the theory he stuck to ________ wrong.

A. provesB. was provedC. proved D. proving

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【答案】C

【解析】

试题分析:考查动词时态与语态。prove意为“证明”,用“prove (to be) + 名词/形容词等”结构时,它是系动词,和后面的成分构成系表结构,等同于turn out;而系动词是不能用于被动语态的。根据句意用一般过去时态,故选C。