They kept trying _________ they must have known it was hopeless.
| A．if | B．because | C．when | D．where |
In the past few years, “My Heart Will Go On” was a popular song among young people, ____ were often heard singing it at parties.
| A．who | B．where | C．which | D．what |
The house was sold for $60,000, which was far more than its real ____.
| A．cost | B．value | C．price | D．money |
1 didn’t mean ____ anything, but those apples looked so good I couldn t resist ____ one.
| A．to eat; trying | B．to eat; to try |
| C．eating; trying | D．eating; to try |
I should like to try that coat on, but I don t know if it is my ____.
| A．length | B．measure | C．size | D．pattern |
A new technique ____ out, the yields (收成) increased by 20% .
| A．having working | B．having been working |
| C．has worked | D．had been worked |