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【题目】Don’t make any noise. We ________ in the math problem.

A.will digB.are diggingC.digD.were digging

【答案】B

【解析】

句意:不要制造噪音,我们正在深入研究这个数学问题。
考查现在进行时基本用法。will dig将要深挖,一般将来时;are digging正在深挖,现在进行时;dig挖掘,一般现在时;were digging(过去)正在深挖,过去进行时。根据“Don’t make any noise.”可知说话此时此刻研究正在进行,用现在进行时。故选B项。

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