He was reading his book, completely _______ to the world.
| A．lost | B．losing |
| C．to lose | D．to have lost |
I had just posted the letter when I remembered that I hadn’t _________ the cheque.
| A．imposed | B．involved | C．enclosed | D．contained |
The opening between the rocks was very narrow, but the boys managed to _______ through.
| A．press | B．squeeze | C．stretch | D．leap |
Being able to speak but not write is like living in a(n)__________ mansion and never leaving one small room.
| A．vital | B．enormous | C．moderate | D．visible |
David paused to consult his notes, and then _______ with his speech.
| A．proceeded | B．pursed | C．pronounced | D．proposed |
The point is that the new, the different, is almost by __________ scary.
| A．definition | B．limitation | C．declaration | D．origin |