You ought to have a good rest you’ve finished your painting.
A. even if
B. when
C. now that
D. as long as
网友回答
A. even if
B. when
(答案→)C. now that
D. as long as
解析：词义辨析。even if 即使，甚至；when当……时候；now that由于，既然；as long as只要。句意：既然你已经完成了绘画作品，你应该好好休息一下。所以选C。