I think everyone should donate blood he is healthy because that’s a citizen’s responsibility.
A. as if
B. as long as
C. now that
D. in order that
网友回答
A. as if
(答案→)B. as long as
C. now that
D. in order that
解析：考察连词辨析。A似乎；B只要；C既然；D为了；结合句意可知B正确。句意：我认为只要健康，人人都应该献血，因为那是公民的责任。