In Engpsh, "doing homework" can be abbreviated as "hw." For example, you could say "I have a lot of hw to do tonight" to mean "I have a lot of homework to do tonight."

Alternatively, you could also use the acronym "HW" to refer to homework. For example, you could say "I have a lot of HW to finish before tomorrow" to mean "I have a lot of homework to finish before tomorrow."