摘要：It was his mother came in to prepare his lessons. A.not until,did the boy begin B.until,that the boy began C.until,did the boy begin D.not until,that the boy began KEY:1-5 DBACD 6-10 CDCAB 11-15 BBDCB 16-20 DCCDC 21-25 DACDD 26-30 BCCB 状语从句专练答案: 1-5 C A B A D 6-10 C B C B D 11-15 A C D D D 16-20 D B C D C 21-25 C C D B B 26-30 A A C D D

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