Choose the best answerMy friend asked me .................. I had ever seen any unidentified flying object.

16/20

Choose the best answer

My friend asked me .................. I had ever seen any unidentified flying object.

whether

where

both A& B

Giải thích

Cấu trúc: S+ asked + O + if / whether + S + V.

=> My friend asked me if/ whether I had ever seen any unidentified flying object.

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