Bobfirstworkedasacookandthen       asecondjobasateacher...

問題詳情：

Bob first worked as a cook and then        a second job as a teacher．

         A．went on doing                  B．went on to do

         C．continued on doing          D．continued doing

【回答】

B

知識點：動詞和動詞短語

題型：選擇題