By 16:30,        was almost closing time, nearly all the paintings had been sold.

 _     ____ and I will hit you.

Jim is unhappy, do you know_____? 

Scientists have long wondered　　　parts of the brain are involved in musical tasks. 

China represents a huge opportunity to America, so it’s important for Americans to know _______ the Chinese work and think and to make strong friendships and connections with Chinese people.