They didn't sit in the first row.In which row did they sit?Did they sit in the first row?The performance didn't last two hours. How long did the the perfomance last?Did the perfomance last 2 hours?He went to Leningrad to see
some friends. Why did he go to Leningrad?Did he go to Leningrad to see some friends?She didn't put the mail on my desk. Where did she put the mail?Did she put the mail on the desk?He didn't walk to
school with Mary.Whom with did he walk to school?Did he walk to scholl with Mary?They didn't speak to us in French. In what
language did they speak to us?Did they speak to us in French?He didn't arrive home very late.When did they arrive home?Did they arrive home very late?