--HasyourformerclassmatecomebackfromtheUSA --Yes,he___________thereforeightyears.
A.has stayed B.stays C.stayed D.had stayed正确答案C
--HasyourformerclassmatecomebackfromtheUSA --Yes,he___________thereforeightyears.
A.has stayed B.stays C.stayed D.had stayed正确答案C