____________ 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
.John sold the camera yesterday which his brother ________ him as a birthday present from Japan.
| A．has sent | B．had sent | C．was sending | D．would send |
.I can never forget the day ______ we worked together and the day _______ we spent together.
| A．when; which | B．which; when | C．what; that | D．on which; when |
--- Shall we call on Frank tonight?
---We’d better not. He is said ________ a lecture.
| A．preparing | B．to be preparing | C．to have prepared | D．having prepared |
Have you got the message I left with your father yesterday_______ you’ll have an important meeting tomorrow afternoon.
| A．in which | B．with whom | C．that | D．which |
--- Who knocked at the door?
--- I’ve no idea. I just pretended nobody was at home, so I didn’t ask who ______ was.
| A．he | B．that | C．she | D．it |