Составить по одному предложению на каждое правило - Future Simple, be going to, Present Continuous (всего будет 3 предложения).

Future simple: I will play tennis tomorrow

Be going to: They are going to swim in the pool.

Present simple: I'm washing my clothes at the moment

furute simple : If the weather is fine tomorrow, we will go to the city.

be going to: i am going to drink a cup tea

present continuous: They're repairing the car right now