14. He _____ a visit to the factory and was warmly _____ by the workers there.
| A．took, welcome | B．took, welcomed |
| C．paid, welcome | D．paid, welcomed |
Walmart, which is one of the largest American supermarket chains, some of its stores open 24 hours on Mondays through Saturdays.
| A．keeps | B．keep | C．have kept | D．had kept |
Had they known what was coming next, they second thoughts.
| A．may have | B．could have |
| C．must have had | D．might have had |
The work is so difficult to deal with that I think a man of genius could accomplish the task.
| A．nothing | B．all | C．anything but | D．none but |
To our surprise, Tom and John, neither of whom regular training, very excellent.
| A．have gone through; is | B．has gone through; are |
| C．have gone through; are | D．has gone through; is |
__________ there is no law stating how you may dress, not all fashions are respectable.
| A．Because | B．Since | C．While | D．Unless |