----It is that self-protection education is required at school.
----I agree. We always have a large course months.
A. certainly; every a few
B. certain; every few
C. sure; every a few
D. surely; every few
网友回答
A. certainly; every a few
(答案→)B. certain; every few
C. sure; every a few
D. surely; every few
解析：可联系答.案.网客服索取。