you have begun, you must keep it up. A. As soon as B. While C. Once D. Although
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________you have begun, you must keep it up.
A.As soon as B.While C.Once D.Although
试题答案
答案:C
提示:| once一旦。
|

________you have begun, you must keep it up.
A.As soon as B.While C.Once D.Although
答案:C
提示:| once一旦。
|