Someone can help me out with my English homework?

Where does your brother live? (Use present simple for facts in the present)Look there! Those men are trying to start your car. (Action happening at the time of saying - Present continuous)Tom writes books in his free time. (Habits, hobbies - Present simple)When does Mary do the shopping? (Ask about habit)Does Jane's father work on Sunday? (Ask about schedule - present simple)I want to know the answer now. ("want" is not used in the verb-ing form, so that use present simple to express the feeling at the present)I can't hear you. I am repairing the car in the garden. (Action happening at the time of saying)Are you listening to the radio now? (Now - action is happening => Present continuous)Does Jane like her school? (Ask about hobby, favorite things, etc. - use present simple)What are those boys doing with my bike? (Ask about action happening at the time of saying)Mary plays tennis on Monday. (About habit - use present simple)Why do you get up at five on Sundays? (Ask about habit - use present simple) We do not play football on Saturday. (About habit - use present simple)

true, heat engines use heat to power themselves to do work.

hope this helps