Question

It was at the airport _____ was completed last year _____ he worked as a volunteer helping foreigners in need of translation service.

1. A.
   which; where
2. B.
   that; where
3. C.
   which; that
4. D.
   where; what

Answer 1

C
试题分析：考查定语从句和强调句型。本题第一空which指代先行词the airport在定语从句which was completed last year中做主语，第二空that与句首的it was构成强调句型。句意：就是在去年完工的机场里他充当一个志愿者来帮助那些需要翻译服务的外国人。故C正确。
考点：考查定语从句和强调句型
点评：定语从句的关键在于分析句子结构，定语从句中如果既不缺主语，也不缺宾语和表语，就要考虑是否用关系副词或whose作定语，意为“谁的”。至于如何判断缺不缺主或是宾语，尤其是缺宾语的情况，要将先行词带到定从中谓语动词之后看是否符合逻辑搭配，如符合则缺宾语，如不符合就不缺。同时强调句型在高考中每年必出，关键是要会判断，平时练习时要有这个意识。it is /was+被强调部分+that/who+…判断方法是去掉it is /was  that/who句子不缺成分，即为强调句型。