1.Great changes have taken place since then in the factory _____we are working.
A. that B. which
C. where D. there
【答案】C
【解析】
【详解】考查定语从句。句意：从那时起，我们工作的工厂发生了巨大的变化。此处the factory 是先行词，where是关系副词，表示地点，在定语从句中作地点状语。故选C。
2.____ the help of the teacher, the student who wasn’t good at math ____ the difficult problem quickly.
A. Under; worked out B. With; worked
C. Under; solved D. With; solved
【答案】D
【解析】
【详解】考查固定搭配和时态。固定搭配with the help of在…的帮助下；work out计算出，制定出；work on从事于；solve解决。句意：在老师的帮助之下，那位擅长于数学的学生很快就解决了那道数学题。结合句意可知句子用一般过去时态，故选D。
