_____________ we all know is that destroying nature means destroying ourselves.
| A．what | B．Which | C．That | D．It |
With Father's Day around the corner, I have taken some money out of the bank __________presents for my dad.
| A．buy |
| B．to buy |
| C．buying |
| D．to have bought |
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 |