you understand the rule, you will have no further difficulty.A. WhileB. OnceC. ThoughD. U

发布时间：2020-08-15 00:09:49

     you understand the rule, you will have no further difficulty.
A. While
B. Once
C. Though
D. Unless

网友回答

A. While
(答案→)B. Once
C. Though
D. Unless
解析：本题考查连词的区别辨析。once指的是“一旦”。
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