The telephone _____ three times in the last hour, and each time it _____ for my sister.
| A．had rung; was | B．has rung; was | C．rang; has been | D．has been ringing; is |
If a lot of people say a film is not good, I won’t bother to see it, or I’ll wait ___ it comes out on DVD.
A.whether
B.after
C.though
D.until
Between the two parts of the concert is an interval, ___ the audience can buy ice-cream.
| A．when |
| B．where |
| C．that |
| D．which |
___ 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 |
When ___ help, one often says”Thank you” or”It is very kind of you”.
| A．offering |
| B．to offer |
| C．to be offered |
| D．offered |
The villager acting as our ___, we enjoyed our visit very much
| A．helper |
| B．assistant |
| C．leader |
| D．guide |