Editing
Do you have any idea what did she say?
Do you have any idea what she said?
I don't know. What should I do?
I don't know what I should do.
Is the Earth the 3rd planet from the Sun? Can you remember?
Can you remember if/whether the Earth is the 3rd planet from the Sun?
I am not sure what I should wear to the party.
I am not sure what to wear to the party.
Your teacher loves pizza is obvious.
That your teacher loves pizza is obvious.
I am happy. You came to visit.
I am happy that you came to visit.
Did she enjoy the concert? Do you know?
Do you know if/whether she enjoyed the concert?
She needs to know whether she should go or not.
She needs to know whether to go or not.
I usually go out with which friend has free time.
I usually go out with whichever friend has free time.
She doesn't understand English. That is obvious.
It is obvious that she doesn't understand English.
Can animals speak human language? Are the researches wondering?
Are the researches wondering if/whether animals can speak human language?
Jane asked where she could find a good restaurant.
Jane asked where to find a good restaurant.
We're delighted by that Sally invited us to her home.
We're delighted by the fact that Sally invited us to her home.
What is her name? I'm not sure.
I'm not sure what her name is.
Is the library open now? Could you tell me?
Could you tell me if/whether the library is open now?
I am not sure whom I could talk to about it.
I am not sure whom to talk to about it.
A miracle the boy survived the car accident.
It is a miracle that the boy survived the car accident.
How long has she been a writer? I wonder.
I wonder how long she has been a writer.
Has he quit smoking? Do you know?
Do you know if/whether he has quit smoking?
Joe asked everyone how he could pass a course.
Joe asked everyone how to pass a course.