【題目】Is there any further ________ in the study on Mars? (develop)

【答案】development

【解析】

句意:對(duì)火星的研究還有什么進(jìn)展嗎?

develop動(dòng)詞,發(fā)展。根據(jù)句意和分析句子可知,此處缺少名詞作主語(yǔ),所以這里用動(dòng)詞develop的名詞形式development;結(jié)合句中謂語(yǔ)動(dòng)詞is是單數(shù)形式,根據(jù)就近原則,所以主語(yǔ)development也用單數(shù)形式,故填development。

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