3道英语语法Who do you suggest be sent to work there?请问为什么不是Who do

3道英语语法
Who do you suggest be sent to work there?
请问为什么不是Who do you suggest that should be sent to work there?
I hope the reform being carried out in our country ar present will bring about the desired results.
请问这里是results为什么不用_ing形式而用_ed形式
Dr Bush was selected president of the United States,a position his father had held for 4 years.
请问这句话中selected和president之间为什么不用+as.