YCT四级第一套
YCT Level IV Old Exam I

YCT四级第二套
YCT Level IV Old Exam II

YCT四级第三套
YCT Level IV Old Exam III

YCT四级第四套
YCT Level IV Old Exam IV

YCT四级第五套
YCT Level IV Old Exam V

YCT四级第六套
YCT Level IV Old Exam VI