连词成句.1.the world is longest which river in the )
2.the city has which population lowest density )
人气：275 ℃ 时间：2020-04-12 17:01:53
解答
1 Which is the longest river in the world?
这世界上哪条河最长?
2 Which city has the lowest population density?
哪个城市的人口密度最低?
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