Albert Einstein left Germany for the United States during World War II, when Jews(犹太人)________ in Germany．

1. A.
   had badly treating
2. B.
   were badly treating
3. C.
   had been badly treated
4. D.
   were badly treated

 Albert Einstein left Germany for the United States during World War II, when Jews (犹太人) ______ in Germany.

       A. had badly treating                                               B. were badly treating   

       C. had been badly treated                                         D. were badly treated