为了给植物浇水，我把花盆完全浸入水中。

I'm ___submerging the flowerpot completely in water to water the plants.

大雨过后，洪水很快淹没了低洼的农田。

After the heavy rain, floodwaters quickly started ___submerging the low-lying farmlands.

他完全沉浸在音乐创作中，忘记了时间。

He is completely ___submerging himself in music composition, losing track of time.