Mark the letter A, B,

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. The coffee was very strong, but it couldn't keep us awake.

B. The coffee was not strong enough to keep us awake.

C. The coffee was not good enough for us to keep awake.

D. We were kept awake although the coffee was not strong.