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THhepopulationofChinaisabout(1.3billion)括号内提问Theysurf(threetimesaday)ifpossible同上Hewillhaveaparty.Iknew.合并为一句They'vebeenabroad一般疑问句

题目详情
THhe population of China is about (1.3 billion)括号内提问
They surf (three times a day) if possible同上
He will have a party .I knew.合并为一句
They've been abroad一般疑问句
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答案和解析
What is the population of China?
What times a day do they surf,if possible?(How often do they surf,if possible?)
I knew he would have a party.
Have they been abroad?