We palanted many flowers and green trees in our school,which（ )the beauty of the whole school.
问题描述：
We palanted many flowers and green trees in our school,which（ )the beauty of the whole school.
A added to
B added up
C added up to
D were added to
说说为什么不能选D
答
花和树为学校增添了美,并无被动意,所以不用被动语态.
add to 增加
add up to 总计达到
add up 加起来