Using transportation (124) Comparing cultures (78) Exchanging personal information (46) Expressing date (59) Cultural differences (47) The arts (76) Housework (48) Using public institutions (immigration office) (2) Health (155) Apologizing (7) Using public institutions (library, post office, etc.) (8) Economics and business administration (273) Science & technology (91) Politics (149) Watching a movie (105) Hobby (103) Ordering food (132) Architecture (43) Family events (57) Pop culture (52) Describing food (78) Geological information (138) Social system (81) Family events (during national holidays) (2) Describing events, accidents, disasters (43) Environmental issues (226) Introducing (introducing family) (41) Daily life (11) Expressing day of the week (13) Inviting and visiting (28)