How many trees （） this years?

How many trees--(plant) this year .讲为什么 how many trees are How many trees _____ in the last two years Awere pianted Bpl how many years翻译 how many new trees ________(plant)this year by the students how many years的用法 造句 How many years ago how many trees have you planted? how many trees can you see? How many trees can you see是什么意思 Many trees _____(plant)in our school yard these years. 怎样区分how many和how many years