How do you say "Who is this?" or "Who is that?" in Japanese?

On the contrary, in Japanese how to say/call the people who failed a test?

like when you are on the phone you say "mushi-mushi" [hello] then who is it? can anyone tell me how you would say it? ~thanks bye!!

How do you say: "Kim has seven cars" in Japanese?? How do you say: "John read three books last year" in Japanese?? How do you say: "Mary has three part-time jobs" in Japanese?? How do you say: "John slept five hours...

How do you say: "Kim has seven cars" in Japanese?? How do you say: "John read three books last year" in Japanese?? How do you say: "Mary has three part-time jobs" in Japanese?? How do you say: "John slept five hours...

How do you say "I'll take my leave" in Japanese? I do realize it sounds formal, but I'm asking for that phrase anyway. Also, how do you say 'How do you say --- in Japanese?" For example, I could ask my teacher "how do you say (insertenglishwordhere...

Okay, could anyone tell me how to say (in romaji and Japanese characters, please): -I don't know what to say! -Whoa, that was too much for me to say. -I don't speak Japanese very well. -I'm from America. -I'm just going to say random things now. -Hi...

How do you say "I like Japanese" in Japanese? Oh and how do you say: "Do you speak English?" In Japanese as well. Thx guys :D

I have some phrases I'm very curious about. There are a few that I think I know, but I would love it if you corrected me. Some of these are lines from some of my favorite songs. I've just changed them to try to make them into more complete sentences...

Which one is mine? That one is yours. Is this a Japanese book? No, that isn't a Japanese book. I've just started taking Japanese seriously and I left my notes at school >.< Also, Hiragana for the following would be appreciated as well. What is...