СРОЧНО НО ЕР 4 плиз ,занятие через 20 мин пожалуйста помогите

You have to turn the computer on before you can use it. Emails go quicker than letters. You can use a mobile phone to text your friends. These days we can watch DVDs on a computer. MP3 players are better and smaller that CD players. Now we can take photos on some mobile phones.