Flu vaccines are _ commonly as a shot,which contains killed flu viruses that will cause
问题描述：
Flu vaccines are _ commonly as a shot,which contains killed flu viruses that will cause
will cause the body to make anitbodies to fight off infection by the live flu.
A available B neat C cheerful D well-lit
答
A available
快点采纳哟,不明还要以追问的,