----- Sit down please.----- ____________.

--Sit down, please. --       .

A. Thank you.             B. Good morning.     C. Hello.   D. Goodbye

----- Sit down please.----- ____________.

 --- Sit down, please!         

---                   .

A. Hello.    B. You sit down.    C. Thank you!    D. OK.

41. Sit down, please!

　 ____________ ___________ __________ , please!

42. Their friends enjoyed themselves at the party.

　 Their friends __________ __________ __________ at the party.

43. He had a rest after he finished his work.

　 He __________ __________ a rest __________ he finished his work.

44. I met Li Feng when I went home.

__________ my __________ home, I met Li Feng.

45. There are many students on the playground.

There are __________ __________ students on the playground.