I regret _____ hard at school, or I would have succeeded in passing the exam.
| A．not to work | B．having not worked |
| C．to have not worked | D．not having worked |
By the time I left the concert，my ears_________，with complex feelings filling my heart．
| A．had rung | B．were ringing | C．were to ring | D．rang |
When you have any questions，tum to Jane or Lucy or _________ your group．
| A．whichever | B．whoever | C．whatever | D．wherever |
— What about your self-drive trip yesterday?
— Tiring! The road Was being widened，and we _________ rough ride.
| A．have | B．would have | C．had | D．have had |
Susan’S husband encouraged her to attend the concert，_________ he would take care of the kids．
| A．deciding | B．allowing | C．promising | D．supposing |
Among customers there are different preferences __________ what is attractive．
| A．in honor of | B．in place of | C．in need of | D．in terms of |