解释英语单选

问题描述:

解释英语单选
The government is considering the environment-friendly plan which some scientists would like to see( )soon.
a.to be carried out b.be carried out c.carrying out d.carried out

The government is considering the environment-friendly plan which some scientists would like to see( )soon.which some scientists would like to see( )soon.是一定语从句,修饰前面的plan.在从句中,主语是som...