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Did they have any milk for lunch today? Do you know? (连成宾主从句)
Do you know ________ they ________ any milk for lunch today?
答案:if/whether,had
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题目内容
句型转换
Did they have any milk for lunch today? Do you know? (连成宾主从句)
Do you know ________ they ________ any milk for lunch today?