来自陈炳森的问题
Theyareplantingtreesonbothsidesofthestreet改为被动语态
Theyareplantingtreesonbothsidesofthestreet改为被动语态


Theyareplantingtreesonbothsidesofthestreet改为被动语态
Theyareplantingtreesonbothsidesofthestreet改为被动语态
Treesarebeingplantedbythemonbothsidesofthestreet