Ⅰ.单句语法填空
1．(2019·全国卷Ⅱ)Now Irene Astbury works from 9 am to 5pm daily at the pet shop in Macclesfield, which she opened with her late husband Les.
解析：考查定语从句。分析句子结构可知此处是一个非限制性定语从句，且关系词在句中替代先行词a pet shop在从句中作宾语，故用关系代词which。
2．(2019·全国卷Ⅲ)They were well trained by their masters who had great experience with caring for these animals.
解析：考查定语从句。分析句子结构可知had great experience with caring for these animals为定语从句，修饰先行词masters，masters为人，故填who。
3．(2019·浙江卷)On the edge of the jacket, there is a piece of cloth that/which gives off light in the dark.
解析：考查定语从句。分析句式可知，先行词是cloth，后面是定语从句，且在从句中作主语，故用关系代词that/which。
4．(2019·北京卷)The students benefitting most from college are those who/that are totally engaged (参与) in academic life, taking full advantage of the college's chances and resources (资源)．
解析：考查定语从句的引导词。those做先行词时，关系代词一般用who；又因为that也可以指人，故填who/that。
