Ubah menjadi simple past tense

1. (+) your mobile phone rung.

(-) your mobile phone didn't ring.

(?) did your mobile phone ring?

2. (+) The children sang the song together.

(-) The children didn't sing the song together.

(?) did the children sing the song together?

1. + Your mobile phone rang

   - Your mobile phone did not ring

   ? Did Your mobile phone ring?

2. + The children sang the song together

    – The children did not sing the song together

    ? Did the children sing the song together?