123.2 Complete the sentences. Use in, at or on + the following: the window
the mountains
that tree
the river
my guitar
the island
the next garage
your coffee
1 Look at those people swimming in the river.
2 One of the strings
is broken.
3 There's something wrong with the car. We'd better stop
4 Would you like sugar
?
5 The leaves
are a beautiful colour.
6 Last year we had a wonderful skiing holiday
7 There's nobody living
It's uninhabited.
and looking outside.
8 He spends most of the day sitting hellp my ​

We always hear many students complain about having to study math or chemistry, even when they don't want to become a doctor or an engeneer. And it's possible to understand, it is actually true, the majority of the students won't even use math in the future. however, it is still important to study compulsory subjects. First of all, there are thousands of jobs that require knowing mathematics, even the final exam mark will matter to a college or the university you'll apply to. Actually, everyone uses math whether they realize it or not. In our everyday life we count in stores to find out how much something costs, and in the future things like that will stay important as well. Math helps us with other subjects, like physics and chemistry. A lot of math problems help the students to solve tasks in physics. 

Hello, (friend's name)! In my last letter, I wrote to you about how I spent my summer. Summer is over, school days have begun. My first day at school was spent at home, since no one goes to school now, everyone studies remotely. All lessons were held in the app for learning. We were given tasks and we did them. There weren't many lessons, because we were just starting to learn. In all the lessons, we repeated the topics from last year. That's how my first day of school went. I'm sorry, but I have to stop writing because school has started and I have to get ready for class. It was your pen friend. Bye!

(your name)