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1. The children _____ our librarian to put the books on the shelves yesterday.
2. The children _____ our librarian to put the books on the shelves at 2 o’clock yesterday.
3. The children _____ our librarian to put the books on the shelves by 2 o’clock yesterday.
4. The children _____ our librarian to put the books on the shelves every day.