驱虫药的服药时间是（）
A.饭前服
B.饭后服
C.空腹服
D.晨起服
E.不拘时服
参考答案：C
Please look __________ the blackboard.[ ]
A. on
B. at
C. to
After a serious illness, he finally _______ how important his health is.
A．meant
B．realized
C．added
D．impressed
