毎朝、庭の花に水を___。
Q. Which verb is traditionally used for giving water to plants?
Translation
Every morning I water the flowers in the garden.
Explanation
やる is the traditional verb for giving to plants, animals or social inferiors: 水をやる. 水をあげる is now common in speech, but やる remains the textbook-standard choice tested here; くれる/もらう reverse the direction.