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Câu hỏi: 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.
This is such a difficult homework that it took me much time to finish it.
A. is
B. a
C. that
D. much
This is such a difficult homework that it took me much time to finish it.
A. is
B. a
C. that
D. much
Công thức "quá nhiều đến nổi mà": such + a/an + adj + countable Noun "homework" là danh từ không đếm được nên KHÔNG dùng a/an
Đáp án B.