单项选择题
()Charles starts a job, he will do it () it is finished.
A.Since, where B.Each time, once C.Once, till D.The moment, as
单项选择题 Accordingtothepassage,aknowledgeofthecustomsofotherraces()
单项选择题 Accordingtothepassage,()haschangedthemostinthelast500years.
单项选择题 Wounded()hewas,herefusedtocomebackfromthefront.