【題目】We believe the time and hard work _______ in completing such an important project are worthwhile.

A. involved B. involving

C. to involve D. to be involved

【答案】A

【解析】

試題分析：考查非謂語(yǔ)動(dòng)詞。邏輯主語(yǔ)the time and hard work與involve之間是被動(dòng)關(guān)系，所以用過(guò)去分詞

表被動(dòng)。句意：我們相信完成這樣一個(gè)重要的工程所用的時(shí)間和努力是值得的。故選A。

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