you understand this rule, you will have no difficulty in finishing the task. A. Until B. Once C. Though D. Unless 查看更多

 

题目列表(包括答案和解析)

_____ you understand this rule, you will have no difficulty in finishing the task.
[     ]
A. Until
B. Once
C. Though
D. Unless

查看答案和解析>>


同步练习册答案