Question

求答案和解析

. There _______ great changes in my hometown by the end of 2000. A. have been B. were C. had been D. had had
求速度答。。

Answer 1

选C
there be句型，先排除D,
时间状语by the end of 要用完成时，如果加过去的时间就用过去完成时，
如果加将来的时间，就用将来完成时，所以这道题用过去完成时。