The flowers in our gardens by the workers and they look so beautiful.A. are watered B. i

问题补充：

The flowers in our gardens by the workers, and they look so beautiful.

A. are watered B. is watered C. are watering

答案：

解析：主语是The flowers和动词water浇水的关系是被动，被动语态的构成be+动词的过去分词，water过去分词加ed变成watered。The flowers是复数，be动词用are,故选A