There___lots of old buildings here in the past A,was B,used to ha_英语解答

There___lots of old buildings here in the past A,was B,used to have C,used to be

人气：253 ℃　时间：2020-03-30 18:57:27

解答

C,used to bewas为什么不行buildings是复数，be肯定不能用单数形式was