问题描述：
英语 对划线部分提问 (21 20:37:15)
we'll have an exam in ----(-in fifteen days )---
Alan's aunt has been to japan ___(twice)__
This new kind of MP4 is _(about$ 500)____用两种不同的方式
we'll have an exam in ----(-in fifteen days )---
Alan's aunt has been to japan ___(twice)__
This new kind of MP4 is _(about$ 500)____用两种不同的方式
问题解答：
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