Penjelasan:

1. (+) you are playing piano

(-) you are not playing piano

(?) are you playing piano?

2. (+) malani is living in Surabaya

(-) malani is not living in Surabaya

(?) is malani living in Surabaya?

3. (+) we are doing our homework

(-) we are not doing our homework

(?) are we doing our homework?

4. (+) they are working together now

(-) they are not working together now

(?) are they working together now

5. (+) siti is wearing pants

(-) siti never wearing pants

(?) is Siti wearing pants?

6. (+) i am liking orange juice

(-) i am not liking orange juice

(?) am i liking orange juice?

maaf kalo salah :)