In much of the animal world，night is the time________for sleep—pure and simple.

 The Chinese football team had experienced a series of reforms. However, its performances in Shenzhen in October ________ all the people, especially the crazy fans.

—How about your trip to Hainan?—It couldn’t have been ________.Sometimes I went swimming in the sea；sometimes I lay on the sand.

He asked me how much he ________ me and I told him that the petrol pump had shown $ 15. 

His suggestion is good in _______ but can’t be put into practice.