_____for his expert advice, John is often asked to help others with their personal affairs.
| A．Having known | B．Being known |
| C．Known | D．Knowing |
Simon made a big bamboo box __________ the little sick bird till it could fly.
| A．keep |
| B．kept |
| C．keeping |
| D．to keep |
Today we have chat rooms, text messaging, emailing...but we seem __________ the art of communicating face-to-face.
| A．losing |
| B．to be losing |
| C．to be lost |
| D．having lost |
As a punishment she was not permitted __________ part in any school activity in a week.
| A．taking |
| B．to take |
| C．take |
| D．to be taking |
I hurried to the airport only __________ the plane I was to take had just taken off.
| A．to find |
| B．finding |
| C．found |
| D．having found |
It is difficult __________ a best friend.
| A．finding |
| B．found |
| C．to find |
| D．find |