We have't heard from David since he left Shanghai.(对划线部分提问,划

We have't heard from David since he left Shanghai.(对划线部分提问,划since he left Shanghai）

恋媛YY 1年前已收到1个回答举报

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共回答了22个问题采纳率：90.9% 举报

How long haven't you heard from David?

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How much are these vegetables?(保持句意不变）

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=How much do these vegetables cost? =What's the price of these vegetables?

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你能帮帮他们吗

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