Question

e. My sister knows how to play the piano (negative interrogative)
f. Aditi always comes to class on time. (interrogative)​

Answer 1

Answer:

e. Does my sister know how to play piano?

f. Does Aditi always come to class on time?

Answer 2

Answer:

Does Aditi always come to class on time ?

Does my sister know how to play piano?

My sister didn't knows how to play piano.