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题目
At one time we had about eighty people here who did nothing but ___ into his family history.(D)
A.to research B.researched C.researching D.research

提问时间:2021-03-04

答案
do ...but do
前面不是do而是其他动词的话就是 动词..but to 动词
以前我们大约有八十来个人不做其他事,只是调查他的家庭史
举一反三
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想找英语初三上学期的首字母填空练习……
英语翻译
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