Make on-the-spot decisions. Write your sentences with full verb forms, use full stops:
1. It’s hot in here. (open the window/I) 
2. It’s cold here. (he/wear/a jumper) 
3. It’s very quiet in the place. (he/ spend/ his holiday/there)

1. It’s hot in here. I will open the window.2. It’s cold here. He will wear a jumper.3. It’s very quiet in the place. He will spend his holiday there.