1. (-) He doesn’t go to school every morning.

    (?) Does he go to school every morning?

2. (+)Lan has good friends at school.

    (?) Does Lan have good friends at school?

3. (?)Are they ready to go home?

    (-)They aren’t ready to go home.

4. (?) Does Nam like to speak E?

     (-) Nam doesn’t like to speak E.

5. (-)The sky isn’t cloudy this morning.

    (?) Is the sky cloudy this morning