It's said in the newspaper that 215 more new schools___in Zhengzh_英语解答

It's said in the newspaper that 215 more new schools___in Zhengzhou by 2020.
A.are buildingB.were builtC.have builtD.will be built
请告诉我为什么?THANK

人气：241 ℃　时间：2020-07-07 15:08:35

解答

D
by 2020是一个信号词,表示这个动作发生在将来,所以要用将来是,同时学校被建表达被动意思,因此要用be built
整句话的意思是,据报道,到2020年郑州将新建215所学校.