Răspuns:
1. Affirmative: They heard the news two minutes ago.
Interrogative: Did they hear the news two minutes ago?
2. Affirmative: The lake froze last night.
Interrogative: Did the lake freeze last night?
3. Affirmative: You made a mistake in your test paper.
Interrogative: Did you make a mistake in your test paper?
4. Affirmative: Matthew wrote a scientific novel.
Interrogative: Did Matthew write a scientific novel?
5. Affirmative: They went on a holiday in Paris.
Interrogative: Did they go on a holiday in Paris?
Explicație:
Când folosești "Did" verbul ramane la infinitiv indiferent de propoziție.