you understand this rule, you’ll have no further difficulty. A. while B. Once C.
来源:网络
时间:
推荐文章

______ you understand this rule, you’ll have no further difficulty.
A. while B. Once C. Though D. Unless
试题答案
B

______ you understand this rule, you’ll have no further difficulty.
A. while B. Once C. Though D. Unless
B