His words puzzled me so much that I had a hard time trying to ______ what he really meant.
| A．make the most of | B．make sense of |
| C．make for | D．make up |
My father bought me _____ mp3, but I lost _____ mp3 yesterday.
| A．an, the | B．an, an | C．the, the | D．the, an |
_______the room，I found my cat lying on the floor，dying．
| A．To enter | B．Enter | C．Entering | D．Entered |
The noise _______ by the machine could be heard at night．
| A．making | B．made | C．make | D．to be made |
The film _______ for twenty minutes when they got to the cinema．
| A．had already been on | B．has already been on |
| C．had already begun | D．has already begun |
The child _____ parents were killed in the air crash is now living with his aunt．
| A．whose | B．his | C．who | D．whom |