| Lily enjoys ________ very much. |
A. play the violin B. playing violin C. playing the violin D. to play violin |
| —I want to know _____ your school trip was? —It was fantastic, really fantastic. |
A. where B. how C. what |
| What happens to a person if he loses _____ of his blood (血)? |
A. three fourth B. one thirds C. two third D. two thirds |