So hard Lan studied that she could pass the English test easily

Task: Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

(Chọn một trong bốn đáp án A, B, C, hoặc D có chứa lỗi sai ở mỗi câu sau).

1.  So hard Lan studied that she could pass the English test easily.

      A                   B                        C                                        D