great changes ___ place.Many new schools ___.为什么不能选B?

Great changes ___(take) place since the earthquake ___ (hit) Great changes ___ place in Hebei since 1980.A.have taken B.h Great changes __ place and many schools ____.A、have taken ；h 8.Great changes took place in China in ___ great changes ___(take)place there last year there were ___ many changes in both place A so B such C too great changes ___ since new China _____in 1949. Great changes have taken place since then in the factory ___ Great changes have taken place since we ___ E-times.And the 18.Great changes ___ (take place),and a lot of factories hav Great changes ___ ___ ___(已经发生)in china They are ___ a new kind of textbook in some schools.正确答案为什么是