—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 |
She may have missed the train, in _____ case she won't arrive for another hour.
| A．whose | B．that | C．which | D．what |
Many countries, for example, Mexico and Japan, _____a lot of earthquakes.
| A．have | B．having | C．to have | D．having had |
Mother told Jim to watch the milk until it boiled and then _____ off the gas.
| A．turn | B．turning | C．turned | D．having turned |
Your mother, however, ____ say that to us that day.
| A．does | B．did | C．is doing | D．was doing |
_____ with a good education can apply for the job.
| A．Who | B．Whoever | C．Anyone | D．Who ever |