Great changes have(A) "taken place"(B) since(C) i had visited(D) _英语解答

Great changes have(A) "taken place"(B) since(C) i had visited(D) the city.
修改病句,说明病因,最后翻译全句,

人气：209 ℃　时间：2020-02-03 10:11:19

解答

把 had visited 改成 visited
这里不需要用过去完成式,had done 表示动作发生在过去的过去
since 引导的从句用一般过去式就可以了