"Hey!" in Spanish to English translation and "that," "what," "which" or "who" in Italian to English translations are equivalents of the Italian and Spanish word che. Context makes clear which option suits in Italian, where the word serves as a conjunction (case 2) or an interrogative (examples 3, 4, 5). The respective pronunciations will be "key" in Italian and "tchey" in Spanish.
Che in Italian means "that" in English.
"What" in English is Che?, Che cosa? or Cosa? in Italian.
"Hey you!" and "You who... !" are the respective English equivalents of the Spanish and Italian phrase Tu che... ! Context makes clear which option suits. The respective pronunciations will be "too key" in Italian and "too tchey" in Spanish.
"What was that?" in English is Che cosa era? in Italian.
Che bono che sei! in Italian means "How attractive you are!" in English.
Che cosa
"Who" in English is chi as a question and che as a statement in Italian.
"What will be, will be!" in English is Sarà quel che sarà! in Italian.
"Of course not!" in English is Certo che no! in Italian.
"It is what it is!" in English is È quello che è! in Italian.
"How pretty!" in English is Che carina! in Italian.
"What is...?" in English is Cos'è...? in Italian.