13．We were sitting peacefully at dinner whenall at once/all of a suddenthe light went out．——青夏教育精英家教网——

13．We were sitting peacefully at dinner whenall at once/all of a sudden（突然）the light went out．（ all ）

12．Mr Brownmade a living（谋生）by selling newspapers when he was young．（live）

11．We live in a world in which only the strongest canmake it to（成功到达）the top．（ it ）

10．Simonheld his breath （屏住呼吸） and dived under the surface．（ hold）

9．When they were about to kill him，he begged them tohave mercy on （对…表示怜悯）him．（ on ）

8．Please bring me the book whenever it'sconvenient （方便）．

7．In learning a new hobby，a new sports，or a new language，patience（耐心）is very much needed．

6．He was so anxious to return home that he had booked a train ticket before the vacation began．

5．The similarity between the two reports suggests that one person wrote both．

4．Pictures are scanned into a form of digital information that computers canrecognize（识别）．

0 136695 136703 136709 136713 136719 136721 136725 136731 136733 136739 136745 136749 136751 136755 136761 136763 136769 136773 136775 136779 136781 136785 136787 136789 136790 136791 136793 136794 136795 136797 136799 136803 136805 136809 136811 136815 136821 136823 136829 136833 136835 136839 136845 136851 136853 136859 136863 136865 136871 136875 136881 136889 151629