One of the requirements for a fire is that the material ____ to its burning temperature.
| A．is heated | B．will be heated | C．be heated | D．would be heated |
Honesty is a virtue________greed is an evil，as the saying goes.
| A．while | B．when |
| C．as | D．and |
Parents，of course，will do everything they could to________their children from harm.
| A．defend | B．convince |
| C．overcome | D．reduce |
I know it’s normal for such a thing to happen，but we________it if we’d been more careful.
| A．need have avoided | B．could have avoided |
| C．will have avoided | D．had avoided |
The old couple，________in the small village for years，can tell the names of all the villagers.
| A．living | B．lived |
| C．having lived | D．to have lived |
—He should have been warned of the danger.
—________，but he wouldn’t listen to me.
| A．So he had | B．So had he |
| C．So was he | D．So he was |