It was 80 years before Christopher Columbus crossed the Atlantic _ Zheng He had sailed to East Africa．（2012．重庆）
| A．when |
| B．that |
| C．after |
| D．since |
— Did you enjoy yourself at the party?
— Yes, I’ve never been to ____________ one before.
| A．the more excited | B．the most exciting |
| C．a more excited | D．a more exciting |
_________about the girl’s safety, the police didn’t catch the robber on the spot.
| A．Concerned | B．Concerning |
| C．Having concerned | D．To concern |
Those successful deaf dancers think that dancing is an activity _________ sight matters more than hearing.
| A．when | B．whose | C．where | D．which |
He telephoned the travel agency to ________ three air tickets to London.
| A．order | B．arrange | C．book | D．take |
As the busiest woman in Norton, she made _______ her duty to look after all the other people’s affairs in that town.
| A．this | B．that | C．one | D．it |