What does"shuttling back "mean?HOHO，YES！But..It's too hard!

What doesshuttling back mean?HOHO，YES！But..It's too hard! What does she like? what does Bob do? What does your mother What time does school what does she do? What does tom do? what does friday do What does she do? what does chinese mean What does it mean What does she work? What does sam what does she doing? What does Miss Green what does this mean? what does the sign What does he enjoy?