The first two stages in the development of civilized man were probably the invention of weapons and the discovery of fire, although nobody knows exactly when he acquired the use of the ( ).

(单选题)I hope my school life of senior high will be ( ) than tha (单选题)After the new technique was introduced, the factory produced (单选题)She ( ) fifty or so when I first met her at a conference. (单选题)I ( ) writing the paper as scheduled, but my mother’s ill (单选题)She is the only one among the ( ) writers who ( ) stor (单选题)People try to avoid public transportation delays by using th (单选题)( ) no cause for alarm, the old man went back to his room (单选题)I was to have made a speech if ( ). (单选题)This spacious room is ( ) furnished with just a few artic (单选题)—Sarah is chosen as the guide for the Fashion Show.— Great!