二道时间状语从句1._________the guest star sang a pop song,the audience shouted"Wonderful!Encore!"2.The host introduced us to the judges ________ he announced the beginning of the performance.用after,before填空

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二道时间状语从句1._________the guest star sang a pop song,the audience shouted"Wonderful!Encore!"2.The host introduced us to the judges ________ he announced the beginning of the performance.用after,before填空
二道时间状语从句
1._________the guest star sang a pop song,the audience shouted"Wonderful!Encore!"
2.The host introduced us to the judges ________ he announced the beginning of the performance.
用after,before填空

二道时间状语从句1._________the guest star sang a pop song,the audience shouted"Wonderful!Encore!"2.The host introduced us to the judges ________ he announced the beginning of the performance.用after,before填空
1.after
2.before

1.____After_____the guest star sang a pop song,the audience shouted"Wonderful!Encore!"
2.The host introduced us to the judges _before_______ he announced the beginning of the performance.

1 when 2 after