用疑问词+不定式改句子.
①They discussed how they should do it last night.
They discussed how to do it last night.
②Tell her where she should go
Tell her where to go
③Have you decided when you are going to finish it?
Have you decided when to finish it?
④Do you know whom you will help in the project?
Do you know whom to help in the project?
⑤He forget what he should do
He forget what to do