01 when?                               itsu?
02 where?                              doko?
03 why?                                naze?/dooshite?
04 who?                                dare?/donata?
05 which?                              dore?/dochira?
06 what?                               nani?
07 how do you---?                      doo yatte---?
08 how long---?/how much---?           dono kurai?
09 how much?                           ikura?

10 where is ---?                       ---wa doko desu-ka?
11 where is the dining room?           syokudoo-wa doko desu-ka?

12 please tell me where---.               ---ga dokoka oshiete kudasai.
13 please tell me where the washroom is.  otearai-ga dokoka oshiete kudasai.
14 please tell me where the toilet is.    toile-ga dokoka oshiete kudasai.
15 please tell me where the phone is.     denwa-ga dokoka oshiete kudasai.