家庭访视前准备工作包括()

A．确定访视对象

B．约定访视时间

C．确定家访计划

D．准备实施护理计划

E．访视备案

A lot of trees________ around here every year, and we can  enjoy fresher air now.

A．were planted

B．are planted

C．will planted

D．are planting