[ ]When they visited their hometown, they saw many changes ______ in that area.A. were happened B. which was happened C. which had been happened D. which had happened
[ ]When they visited their hometown, they saw many changes ______ in that area.
A、 were happened
B、 which was happened
C、 which had been happened
D、 which had happened
发布时间：2025-08-11 18:34:27
