

Ao sábado, ajudo a minha mãe a limpar o pó.
Já limpaste o pó da televisão?
Não gosto nada de limpar o pó aos livros.
"limpar o pó" is in the lesson "Verbs 12" (Level 24), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.