1. I supposed that it would cost me about 10,000 pounds.
Q: How much did you suppose it would cost you? (use ‘you' in the question)
2. I usually drink coffee for breakfast.
Q: What do you usually drink for breakfast? (use ‘you' in the question)
3. I'd rather she came twice a week.
Q: How often would you rather she came? (use ‘you' in the question)
4. They walked 20 kilometers yesterday.
Q: How far did they walk yesterday?
5. It's Brian's turn to take out the trash.
Q: Whose turn is it to take out the trash?
6. I supposed that something different would happen next.
Q: What did you suppose would happen next? (use ‘you' in the question)
7. She's studying here for a semester.
Q: How long is she studying here?
8. She borrowed 20 euros from me.
Q: How much did she borrow from me?
9. Everyone thinks we should cancel the picnic.
Q: Who thinks we should cancel the picnic?
10. They always come late because they live far away.
Q: Why do they always come late?