In 1965, a new Voting Rights Bill became law, ________all black people had the rights to vote from then on．

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In 1965,a new Voting Rights Bill became law, ______ all black people had the rights to vote from then on.

A.that　　　　　　 B.by which　　   C.by what       D.which

A.that　　　　　　 B.by which　　   C.by what       D.which

In 1965, a new Voting Rights Bill became law, ________all black people had the right to vote from then on.

In 1965, a new Voting Rights Bill became law, ________all black people had the right to vote from then on.

1. A.
   by which
2. B.
   that
3. C.
   by what
4. D.
   which