No one knows exactly when the first people arrived in _______ is now called California.
| A．where | B．what | C．which | D．that |
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 |
Anyone _______ bags, boxes, or whatever, was stopped by the police.
| A．seen carry | B．seen carrying | C．saw to carry | D．saw carrying |
“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 |