Mark the let...

Câu hỏi: Mark the letter A, B, c, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

A. John is studying hard in order not to fail the next exam

B. John is studying hard in order that he not fail the next exam

C. John is studying hard so as to fail the next exam

D. John is studying hard in order to not to fail the next exam