YOU CAN NOT WASH THIS DRESS; YOU MUST DRY - CLEAN IT.A. THIS DRESS...

9. You can not wash this dress; you must dry - clean it.a. This dress can not being washed; it must being dry - cleaned.b. This dress can not washed; it must dry - cleaned.c. This dress can not be washed; it must be dry - cleaned.d. all are correct.