______ in prison for ten years, no one recognized him.
| A．The man’s having put | B．The man being put |
| C．The man having been | D．Having been |
—Can I speak to Mr. Wang, please?
—________
| A．Who are you? |
| B．I'm Wang. |
| C．Speaking. |
| D．Are you John? |
No matter what you say, I shall________my opinion.
| A．carry out |
| B．keep up |
| C．go on |
| D．stick to |
The Panama Canal________the Atlantic________the Pacific.
| A．connects; with |
| B．joins; with |
| C．unites; with |
| D．joins; up |
All the preparations for the task________， and we're ready to start.
| A．completed |
| B．complete |
| C．had been completed |
| D．have been completed |
—I'm sorry I stepped outside for a smoke. I was very tired.
—There is no________for this while you are on duty.
| A．reason |
| B．excuse |
| C．cause |
| D．explanation |