How many trees _____ in the last two years Awere pianted Bplanted_英语解答

How many trees _____ in the last two years Awere pianted Bplanted Chave planted Dhavebeen planted

人气：242 ℃　时间：2020-06-18 19:41:53

解答

D have been planted
句子有时间状语in the last two years,是用完成时态的标志,另外trees是被种的,用被动语态.