1.Twopeoplelookingthroughbooksinabookstore.
Therearesomanybooks,aren'tthere
2.Twopeoplealoneinanelevator.
Thiselevatoriswide,isn'tit
3.Twopeoplewaitinginlinetobuyicecream
Theweatherissohot,isn'tit
4.twopeoplewaitingtocrossabusystreet
itissoCrowd,isn'tit