问题

(南京市2008—2009学年度第一学期期末调研测试卷)—Dad, can I surf the Internet? —Again? I wish that you ______ going on line ______ your health.

A:know; will do harm to
B:knew; are doing harm to
C:know; have done harm to
D:knew; were doing harm to
正确答案是: