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1. Both Lan and Hoa went camping last Sunday.
2. It was the house that was built by my grandfather in 1970.
3. Neither Tom nor Nam got up early this morning.
4. We stood on the bridge connecting the two halves of the building.
5. An agreement has been signed to protect the forests being cut down all over the world.
6. Who was the first Vietnamese woman to set foot on the Antarctic?