Indicate the part of speech of the word "WALLOP”

In order to to avoid earthquake hazards , civil engineers had better ____ soil before making high -rise buildings.

Fill up the gap with the right word.

My mother had me _____ milk every day.

I've just finished reading a story called Dangerous Game. It's about a man who.... his wife because he doesn't want to lose her.

She —— wash the plates in the kitchen leaving her study.