a. Are you finishing your homework?

b. Is your father selling books?

c. Are the kids playing on the trampoline?

d. Is she wearing a shorts and a sweatshirt to run?

e. Are they writing some articles to the magazine?

f. Is your neighbor going to the mall with her daughter?

g. Is my friend staying in a fancy hotel?

h. Are his friends walking to school today?

Fica-a-dica: Quando no interrogativo, passe o verbo para a frente da frase!

Espero ter ajudado.