Mary went to school by bike this morning, ________?A.doesn't sheB.wasn't sheC.didn't sheD.does she
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C解析反义疑问句的疑问部分仍然要和陈述部分保持时态的一致性．本题的陈述部分went to是一般过去时的肯定形式，谓语是行为动词；它的疑问部分要用助动词do的否定形式don't来提问，而且要用它的过去形式didn't; doesn't she用于一般现在时的否定提问，而does she用于一般现在时的肯定提问；wasn't she用于陈述部分谓语是系动词的过去形式的提问．