1 Cadets/classmen came to the academy at 7:15 yesterday.
Cadets didn't come to the academy at 7:15 yesterday.
Did cadets come to the academy at 7:15 yesterday?
2. Mary helped a teacher two days ago.
Mary didn't help a teacher two days ago.
Did Mary help a teacher two days ago?
3. My friends watched a new film in the cinema last weekend.
My friends didn't watch a new film in the cinema last weekend.
Did my friends watch a new film in the cinema last weekend?
4. A first-year classman invited many friends to the party.
A first-year classman did not invite any friends to the party.
Did a first-year classman invite any friends to the party?
5. Classmen liked their summer uniforms.
Classmen didn't like their summer uniforms.
Did classmen like their summer uniforms?
6. A policeman helped the old woman yesterday.
A policeman didn't help the old woman yesterday.
Did a policeman help the old woman yesterday?
7 Classmen of the faculty of criminal investigation played football two days ago. Cadets of the faculty of criminal investigation didn't play football two days ago. Did cadets of the faculty of the crime investigation play football two days ago? 8. A lawyer was in the courthouse all day long yesterday.
Was a lawyer in the courthouse all day long yesterday?
A lawyer wasn't in the courthouse all day long yesterday.
9. A criminal was in the police-station yesterday.
A criminal wasn't in the police station yesterday.
Was a criminal in the police station yesterday?
10. Students organized an interesting concert last month.
Students didn't organize an interesting concert last month.
Did students organize an interesting concert last month?