1. ¾îÈÖ verge(~be on the verge of~)
¨ç area ¨è side ¨é brink ¨êline
2. sedulous
¨ç assiduous ¨è pendulous ¨é deciduous ¨ê specious
3. The rabbit regained consciousness during an experimental
surgery due to the inadequate amount of______ being administered