It is really _____ useful dictionary and _____ dictionary every one of us needs．
| A．an; a | B．a; the | C．the; a | D．a; a |
We got __________ at the school gate and went to our respective (各自的）home.
| A．divided | B．separated | C．cut | D．left |
__________ 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 |
Stephen Hawking believes that the earth is unlikelyto be the only planet __________ life has developedgradually.
| A．that | B．where | C．which | D．whose |
The newly-built cafe, the walls of __________ arepainted light green, is really a peaceful place for us, especially after hard work.
| A．that | B．it | C．what | D．which |
I have reached a point in my life __________ I am sup-posed to make decisions of my own.
| A．which | B．where | C．how | D．why |