1. I think *that* he is right.
Hint: Clausola oggetto introdotta da “that” (“che lui abbia ragione”).
2. She doesn’t know *if* they will come.
Hint: Clausola oggetto con “if” per dubbio.
3. It’s important *that* you arrive on time.
Hint: Clausola soggetto con “that”.
4. Tell me *whether* you agree.
Hint: Clausola oggetto introdotta da “whether” (“se sei d’accordo”).
5. I don’t know *whether* he will pass the test.
Hint: “Whether” in alternativa a “if” in frasi di scelta/dubbio.
6. He said *that* he couldn’t come.
Hint: Clausola oggetto introdotta da “that”.
7. I wonder *if* he is at home.
Hint: Clausola oggetto con “if”.
8. It’s clear *that* they made a mistake.
Hint: Clausola con “that”, spiegazione.
9. She asked *if* I was hungry.
Hint: Clausola oggetto con “if”, domanda indiretta.
10. I am not sure *whether* it will rain.
Hint: Clausola oggetto introdotta da “whether”.

1. I don’t know *where* he lives.
Hint: Clausola oggetto con “where”.
2. She asked me *what* I wanted.
Hint: Clausola oggetto con “what”.
3. Do you remember *when* we first met?
Hint: Clausola oggetto con “when”.
4. Tell me *why* you are leaving.
Hint: Clausola oggetto con “why”.
5. He doesn’t know *how* she did it.
Hint: Clausola oggetto con “how”.
6. Please explain *what* happened.
Hint: Clausola oggetto con “what”.
7. I wonder *who* will help us.
Hint: Clausola oggetto con “who”.
8. Can you show me *how* this machine works?
Hint: Clausola oggetto con “how”.
9. I forgot *where* I put my keys.
Hint: Clausola oggetto con “where”.
10. She knows *who* wrote the letter.
Hint: Clausola oggetto con “who”.