Li Lei can't help __the trees,he is busy A.planted B.to plant C.planting D.to be planted
问题描述：
Li Lei can't help __the trees,he is busy A.planted B.to plant C.planting D.to be planted
答
B.to plant
can't help to do sth 没法帮忙做某事
比较：
can't help doing sth 情不自禁做某事