—We are worried about Tom. Why hasn’t he come back?
—Don’t worry. He ______ in a traffic jam.
| A．might be caught | B．may have been caught |
| C．can have been caught | D．should have been caught |
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 |
To test eggs, _______ them in a bowl of water: if they float they’re bad, if they sink they’re good.
| A．put | B．putting |
| C．to put | D．to be putting |