问题描述：
These are that boy's caps.对that boy's caps提问 ______ ______ these?
第二个题目：These are that boy's caps.对that boy's 提问 ______ ______ _____ these?
第二个题目：These are that boy's caps.对that boy's 提问 ______ ______ _____ these?
问题解答：
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