49. Next weekend he will visit the airport which he worked 30 years ago.
解析:下周末他要去参观他30年前工作过的机场。
the airport是表示地点的先行词,在从句中做地点状语,应该用关系副词where来引导定语从句。答案选择C,which改为where。正确的句子应该是Next weekend he will visit the airport where he worked 30 years ago.
49. Next weekend he will visit the airport which he worked 30 years ago.
解析:下周末他要去参观他30年前工作过的机场。
the airport是表示地点的先行词,在从句中做地点状语,应该用关系副词where来引导定语从句。答案选择C,which改为where。正确的句子应该是Next weekend he will visit the airport where he worked 30 years ago.