Had I known about this computer program, a huge amount of time and energy.
| A． | would have been saved | B． | had been saved |
| C． | will be saved | D． | was saved |
The human race has already paid a heavy price for its slow to environment threats.
| A．response |
| B．responsibility |
| C．resolution |
| D．resistance |
Mary and I see each other ____, but not as often as we used to.
| A．sooner or later |
| B．once in a while |
| C．in the end |
| D．more or les |
China recently tightened its waters controls near the Huangyan Island to prevent Chinese fishing boatsfrom ______in the South China Sea.
| A．attacking |
| B．having attacked |
| C．being attacked |
| D．having been attacked |
Tom was for you to come to his birthday party.
| A．eager |
| B．worried |
| C．providing |
| D．considerate |
Usually John would be late for meetings. But this time, ________ to my surprise, he arrived on time.
| A．little |
| B．much |
| C．ever |
| D．even |