--Have you ever been here before?
---Well, I once _________ here for four years. Those days are really unforgettable.
| A．have stayed | B．had stayed | C．have been staying | D．stayed |
_____ 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 |
___ people to find jobs, but also medical treatment will be provided for people who need it.
| A．Not just will help be given to | B．Only help will be given to |
| C．Not only will help give | D．Help will be given only to |
_____ in a poor family made Jack very hardworking when he was still young.
| A．Brought up | B．Bringing up |
| C．Having brought up | D．Being brought up |
Mrs. Brown was very disappointed to see that the washing machine she had had _____ went wrong again.
| A．it | B．it repaired | C．repaired | D．to be repaired |
Will you see to _____ that my children are taken good care of while I am away?
| A．it | B．me | C．yourself | D．them |