The old rules have to be ______ because they only applied to the circumstances that existed when they were made a hundred years ago.
| A．developed | B．established |
| C．observed | D．revised |
Although many people view conflict as bad, conflict is sometimes useful _______ it forces people to test the relative merits of their attitudes and behaviors.
| A．by which | B．to which | C．in that | D．so that |
— I phoned you at 7 yesterday evening but nobody answered.
— Oh, I ________ my dog in the park then.
| A．walked | B．was walking | C．had walked | D．would walk |
Paris________ be a wonderful city but it’s not somewhere I’d like to live.
| A．might | B．would | C．must | D．can |
A decline in electricity output forces industrial estates and cities to burn more coal and give out more carbon to _________ the shortfall.
| A．make out | B．make up | C．bring out | D．bring up |
Maya ________ me deeply when I read her writing, but she touches me most of all when I hear her speak.
| A．controls | B．affects | C．amuses | D．confuses |