1．(2020·浙江卷7月)Over thousands of years，they began to depend less on ________ could be hunted or gathered from the wild，and more on animals they had raised and crops they had sown.
解析： 考查名词性从句。根据语法结构可知，what引导宾语从句，作on的宾语，由于该宾语从句中缺少主语，同时空处表示“……的事物”，故填what。
答案： what
2．(2020·天津卷)The student completed this experiment to make come true ________ Professor Joseph had said.
解析： 考查宾语从句。句意：这个学生完成了这个实验，使约瑟夫教授所说的变成了现实。此处需要用what引导宾语从句。
答案： what
3．(2019·全国卷Ⅰ)While they are rare north of 88°，there is evidence ________they range all the way across the Arctic，and as far south as James Bay in Canada.
解析： 考查同位语从句的引导词。分析句子结构可知，所填词引导同位语从句，解释说明evidence的具体内容，从句中不缺少成分且意义完整，故用that引导。
答案： that
