Many trees ___(plant) in our school yard these years.1.have been _其他解答

Many trees ___(plant) in our school yard these years.1.have been planted 2.are planted
选哪个?为什么?

人气：318 ℃　时间：2019-12-09 10:31:59

解答

1.have been planted
1）树是被种植,应该用被动
2）these years ,这些年是延续的时间,用现在完成时