shouldbe+do?为什么有两个动词啊这样对?那么shouldtodo、shouldbedoneTheymadeitarulethatallcomplaintsfromcustomersshouldbeinvestigate(答案上是填这个词)quickly

Question

should be +do?为什么 有两个动词啊 这样对?那么should to do 、should be done
They made it a rule that all complaints from customers should be investigate (答案上是填这个词) quickly

Answer 1

should be +do?为什么 有两个动词啊 这样对?
答：没有这样的
那么should to do 、should be done
答：没有should to do
有should be done：应该做……