The problem is so complicated ______(花了我们两周时间才解决).

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问题 The problem is so complicated ______(花了我们两周时间才解决).

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答案that it took us nearly two weeks to solve it

解析 根据is so complicated和汉语意思可知,本题要求填写一个结果状语从句,引导词用that。“花费…时间做…”常用it takes/took sb. some time to do sth. 来表达,其中it为从句中的形式主语,真正的主语为动词不定式to do sth.结构。填入相应的词语后本题答案为:that it took us nearly two weeks to solve it。
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