Избрать правильное слово One либо It? и почему? 1.It,s a very

Избрать правильное слово One либо It? и почему? 1.It,s a very useful article. Read (it,one) very carefully. 2. I,m looking for my daughter. I saw (it,one) in your shop window that I laked. Could I have (it,one). 3. quot;Let,s have a snack in a cafe today!quot; quot;Good idea! I know (it, one) round thecorner, (it,one)is very nice.quot; 4. It,s so convenient to work with a computer. I,m going to buy (it,one) when I have enough money.