21.- It's very hot in here. I (open) the window. 22.- It's a secret! OK I (not tell) anyone. 23.- My cousin (work) in the UK for a year. 24.- I (love) you forever 25.- I'm thirsty. I (get) you a glass of water.

21.-I will open the window;
22.-I won't tell anyone;
23.-My cousin will work in the UK for a year;
24.-I will love you forever;
25.-I will get you a glass of water.