题目内容
This book is written by my sister, _________ is working for CCTV.
| A.she | B.that | C.whom | D.who |
D
考查定语从句。my sister是先行词,从句_________ is working for CCTV.缺主语,且指人,选D。
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| A.she | B.that | C.whom | D.who |