英语脑筋急转弯！------Try to Quick Your Mind!

31.How can you make 6 out of three 7's?
32.How can you make 6 out of three 5's?
33.how can you make 1000 out of eight 8's?

34.Can you name the capital of every state in the U.S. in ten seconds?
35.A police officer had a brother, but the brother had no brother. How could that be?
36.Why does a cat look first to one side and then to the other side when it enters a room?

37.How do you know policemen are strong?
38.With which hand do you write?
39.What must you do before you return a book to the library?