_______ from other continents for millions of years, Australia has many plants and animals not found in any other country in the world.
| A．Being separated | B．Having separated |
| C．Having been separated | D．To be separated |
I ____ to send him a telegram to congratulate him on his marriage, but I ____ it.
| A．hoped, hadn’t managed | B．has hoped, didn’t manage |
| C．hope, don’t manage | D．had hoped, didn’t manage |
—It’s a long time since we met last. Haven’t you graduated from college yet?
—_____. I ______ English for four years in Nanjing University.
| A．No, study | B．Yes, have studied | C．No, am studying | D．Yes, studied |
Unluckily, when I dropped in , Dr. Smith ____, so we only had time for a few words.
| A．was just leaving | B．has just left | C．had just left | D．just left |
—We didn’t find Smith attending the lecture.
—No one ___ him about ___ a lecture the following day.
| A．had told, there to be | B．told, there was |
| C．had told, there being | D．told, there to be |
—The former president of Iraq was caught at last.
—Really? Where himself?
| A．has he hidden | B．had he hidden | C．was he hidden | D．has he been hidden |