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1. Have you sent them these novels ?
2. What subject has her younger sister studied all day ?
3. The teacher has told the student about the changes of their timetable .
4. No one has told us about the changes of their timetable.
5. Has she sent us the letter
2. What subject has her younger sister studied all day ?
3. The teacher has told the student about the changes of their timetable .
4. No one has told us about the changes of their timetable.
5. Has she sent us the letter