问题标题:
3Wewereabouttoclimbuptothetopofthemountain________itbegantorWewereabouttoclimbuptothetopofthemountain_______itbegantorainheavily.A.asB.whileC.whenD.since
问题描述:
3Wewereabouttoclimbuptothetopofthemountain________itbegantor
Wewereabouttoclimbuptothetopofthemountain_______itbegantorainheavily.
A.asB.whileC.whenD.since
宋焱回答:
Cbeaboutto...when...
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