新概念英語第四冊課后練習答案：Unit 1 -Unit 10
Unit 1 CABDD BDAAC AB
Unit 2 BCBDC ACAAD BC
Unit 3 CABDA CDABA CD
Unit 4 ACCAB BCDAA BD
Unit 5 CABAB DACBB DD
Unit 6 CACCC AAADB AA
Unit 7 DCABA BACDA AC
Unit 8 BDABD BAABC BC
Unit 9 CDBAA CABAC AD
Unit 10 CAABD CBBDC AA
Unit 1 CABDD BDAAC AB
Unit 2 BCBDC ACAAD BC
Unit 3 CABDA CDABA CD
Unit 4 ACCAB BCDAA BD
Unit 5 CABAB DACBB DD
Unit 6 CACCC AAADB AA
Unit 7 DCABA BACDA AC
Unit 8 BDABD BAABC BC
Unit 9 CDBAA CABAC AD
Unit 10 CAABD CBBDC AA