_______ difficult and challenging the task may be, we must finish it on time, because there is a possibility _______our work will go down in history.
| A．Whatever; that | B．However; as |
| C．Whatever; which | D．However; that |
—The weather has been very hot and dry.
—Yes.If it had rained even a drop,things would be much better now!And my vegetables___
| A．wouldn’t die |
| B．didn’t die |
| C．hadn’t died |
| D．wouldn’t have died |
___for the free tickets,I would not have gone to the movies so often
| A．If it is not |
| B．Were it not |
| C．Had it not been |
| D．If they were not |
What would have happened,___as far as the riverbank?
| A．Bob had walked farther |
| B．if Bob should walk farther |
| C．had Bob walked farther |
| D．if Bob walked farther |
This printer is of good quality.If it___break down whthin the first year,we woule repair it at our expense
| A．would |
| B．should |
| C．could |
| D．might |
But for the help of my English teacher,I___the first prize in the English Writing Competition
| A．would not win |
| B．would not have won |
| C．would win |
| D．would have won |