◎ 题干
It will be a long time           Mr Black            back from abroad.
A.before;comes
B.since;has come
C.before;will come
D.after;will come
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“It will be a long time Mr Black back from abroad.A.before;comesB.since;has comeC.before;will comeD.after;will come…”主要考查了你对  【therebe句型】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。