держать ушки на макушке angolul

keep an eye peeled▼(look out attentively)
verb

keep one's ears open▼verb
[UK: kiːp wʌnz ɪəz ˈəʊ.pən] [US: ˈkiːp wʌnz ˈɪrz ˈoʊ.pən]