Question

【题目】—There ________ a lot of trees in the area.

—But they have all gone because people built a railway here.

A. have been B. used to have

C. have had D. used to be

Answer 1

【答案】D

【解析】句意：------以前这个地区有很多树。-----但是他们已经没有了，因为人们在这里修了一条铁路。考查there be句型。There used to be：过去曾经有…，以前有…；结合句意和语境可知选D。