---Mr Smith spent as much time as he ________ the experiments．
---No doubt he succeeded in the end．
A.could doB.could to doC.could doingD.could on doing在线课程C
解析：
本题涉及到spend time(in)doing sth．和as much…as one can结构．
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-Mr Smith spent as much time as he the experiments．-No doubt he succeeded in the end．A.could doB.cou
编辑：chaxungu时间：2026-04-24 12:52:32分类：高中英语题库
A.could doB.could to doC.could doingD.could on doing在线课程C
解析：
本题涉及到spend time(in)doing sth．和as much…as one can结构．
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