A warning news report from Qatar announces that a group of Islam will continue to kill Americans wherever they are ________ they leave the Arab world forever.

A. even though         B. in case C. whenever    D. until

A warning news report from Qatar announces that a group of Islam will continue to kill Americans wherever they are ________ they leave the Arab world forever.

1. A.
   even though
2. B.
   in case
3. C.
   whenever
4. D.
   until