An individual human existence should be like a river-small at first, narrowly ________ within its banks, and ________ passionately pas boulders and over waterfalls．

1. A.
   containing; rushing
2. B.
   contained; rushed
3. C.
   contained; rushing
4. D.
   containing; rushed

Not until 1916 ________ the existence of the war．

1. A.
   that he recognize
2. B.
   when he recognized
3. C.
   did he recognize
4. D.
   and he recognize

Not until 1916____ the existence of the war.

A．that he recognize                                     B．when he recognized

C．did he recognize                                      D．and he recognize