Tanaka-san wa ashita yasumu to itte imashita.

Mr. Tanaka was saying that he will take a day off tomorrow.

Kore wa nihongo de nan to iimasu ka.

How do you say this in Japanese?

Sensei ni sono koto o iwanaide kudasai.

Please do not tell the teacher about that.

Kare wa kurasu de ichiban atama ga ii to iwarete imasu.

He is said to be the smartest in the class.

Nihon no tabemono to iu to, sushi ga ichiban yuumei desu.

Speaking of Japanese food, sushi is the most famous.

Kare wa nani mo iwazu ni heya o dete ikimashita.

He left the room without saying anything.