Open the brackets and use present continuous, present simple, past simple.6. you (to have) dinner now? 7. where your brother (to work)? — he (to work) at an institute. 8. your grandmother (to sleep) when you (to come) home yesterday? .

1. Are you having dinner now? - Present Continuous.
2. Where does your brother work? - He works at an institute. - Present Simple.
3. Did your grandmother sleep when you came home yesterday? - Past Simple.