The firemen managed to _____ the fire in time.
| A．extinguish | B．prevent | C．suppress | D．ruin |
Schools across China are expected to hire 50,000 college graduates this year as short-term teachers, almost three times the number hired last year, reduce unemployment pressures.
| A．help | B．to have helped | C．to help | D．having helped |
When hethe door, he found his keys were nowhere.
| A．would open | B．opened | C．had opened | D．was to open |
In April, 2009, President Hu inspected the warships in Qingdao, the 60th anniversary of the founding of the PLA Navy.
| A．marking | B．marked | C．having marked | D．being marked |
not to miss the flight at 15:20, the manager set out for the airport in a hurry.
| A．Reminding | B．Reminded | C．To remind | D．Having reminded |
____ twice, the postman refused to deliver our letters unless we changed our dog.
| A．Being bitten | B．Bitten |
| C．Having bitten | D．To be bitten |