1. When I came home my mom ..... dinner for us. ( to cook )2. " What .... you .... about? ( to talk )3. What ... you ... at a minute ago? ( to laugh ) 4. The spaceship captain .... the satellite which ... very fast. ( to notice / to move )
When I came home my mom was cooking dinner for us." What were you talking about?What were you laughing at a minute ago?The spaceship captain noticed the satellite which was moving very fast.