The professor spoke so fast that I found __________ him.
| A．it hard following |
| B．hard to follow |
| C．its being hard to follow |
| D．it hard to follow |
We paddled over and climbed on to the steamboat, as quiet as mice.
| A．kept | B．keeping |
| C．to keep | D．keep |
Determined to try out “Happy Girls”, she from home without telling her parents.
| A．ran away | B．took away |
| C．kept away | D．put away |
To learn English well, we should find opportunities to hear English _____as much as we can.
| A．speak | B．speaking |
| C．spoken | D．to speak |
He is ________my job while I am on holiday.
| A．taking in | B．taking up |
| C．taking off | D．taking over |
A balanced diet can be better to our health when ______ with regular exercise.
| A．combining | B．comparing |
| C．combined | D．compared |