_________a written permission, he had to write another letter to the president of the university.
| A．Not giving | B．Not having been given |
| C．Having not given | D．Having not been given |
A cook will be immediately fired if he is found _______ in the kitchen.
| A．smoke | B．smoking |
| C．to smoke | D．smoked |
We looked everywhere for the keys, but they are nowhere _______.
| A．to find | B．to have found |
| C．to be found | D．being found |
He was reading his book, completely _______ to the world.
| A．lost | B．losing |
| C．to lose | D．to have lost |
“Mum, why do you always make me eat an egg every day?” “________ enough protein and nutrition as you are growing up.”
| A．Get | B．Getting |
| C．To get | D．to be getting |
“Where is David?” “He is upstairs ______ ready to go out.”
| A．to get | B．getting |
| C．to be getting | D．having got |