8) Its
9) opened
10) has got
11) smaller
12) schoolchildren
13) are
Last weekend I was very busy. I saw my friends, but we didn`t spend our time together for a lot of time. My mum asked me to clean the house. And then my uncle, aunt and two cousins came. My mum cooked a big cake with strawberries on the top. We played the computer with both of my cousins. After that mum reminded me to do my homework.
Will watch (если при каком - то условии, например, if the weather is fine, I will ride a bike), am going to watch (если намереваемся что-то сделать), is going to watch ( неизбежность действия), are/am/is watching (когда все спланировано и подготовлено).
I send postcard to my friend.