After John had wrote the letter he decided it was not appropriate so he tore it up and put it in the wastebasket. .
Giải thích
Chọn A
Sau “after” dùng “had” -> quá khứ hoàn thành nên từ “wrote” sai-> “had written”.
Chọn A
Sau “after” dùng “had” -> quá khứ hoàn thành nên từ “wrote” sai-> “had written”.