David is animal fur, so he won’t visit anyone who has cats or dogs in the house.
| A．curious about | B．allergic to | C．satisfied with | D．food of |
The ability __________ an idea is as important as the idea itself.
| A．expressing |
| B．expressed |
| C．to express |
| D．to be expressed |
More TV programs, according to government officials, will be produced __________ people's concern over food safety.
| A．to raise |
| B．raising |
| C．to have raised |
| D．having raised |
Passengers are permitted __________ only one piece of hand luggage onto the plane.
| A．to carry |
| B．carrying |
| C．to be carried |
| D．being carried |
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 |