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4. Jim's flat is on the fourth floor.
Where ...................................?
5. My brother is in grade twelve.
Which grade .................................?
6. She has lunch at eleven thirty.
What time ...................................?
7. There is one boy in our class.
How many boys ...........................?
8. That is our teacher.
Who ............................................?
9. These are pencils.
What ..........................................?
10. Mr. Quan lives in the country.
Where ...........................................?