we were delighted to find the trees planted a year before ____very tall,应填growing还是being grown

题目

we were delighted to find the trees planted a year before ____very tall,应填growing还是being grown
还是having been growing

答案

答案为having grown或者grown
we were delighted to find the trees（ planted a year before ）_having grown___very tall
这个不可能用被动being grown ,同样,看见小树正在长高可能么?除非你是神.
可以说发现小树正在被砍伐,因为看得见,但不能说正在长高,因为瞬间是看不出来的.
find后面的是一个状态,应该是已经张高了.那么自然是having grown或者grown
希望能够帮到您