题目内容
【题目】He's the engineer ______ designed this tall building.
A. whoB. which
C. /D. whom
【答案】A
【解析】
句意:他是设计这座高楼的工程师。
A. who关系代词,指人,在从句中作主语或宾语;B. which关系代词,指物,在从句中作主语或宾语; C. / D. whom关系代词,指人,在从句中作宾语。此句先行词engineer是人,从______ designed this tall building可知,从句缺主语,故关系代词用who。故A选。
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