Question

【题目】My sister has a CD player but I_________.

A. do B. does

C. don't D. doesn't

Answer 1

【答案】C

【解析】句意：我妹妹有一个CD机，但我没有。A. do动词，做，或者助动词；B. does助动词三单形式；C. don't 助动词的否定式；D. doesn't第三人称单数的助动词否定形式。根据句中but I 可知后文，用否定形式 don't。故选：C。