Jasmine was holidaying with her family in a wildlife park ________ she was bitten on the leg by a lion．

1. A.
   when
2. B.
   while
3. C.
   since
4. D.
   once

Jasmine was holidaying with her family in a wildlife park                she was bitten on the leg by a lion.

A.when

B.while

C.since

D.once

Jasmine was holidaying with her family in a wildlife park__________she was bitten on the leg by a lion.?

A.when                 B.while                 C.since                  D.once