Mark the letter A, B, C or D to...

Câu hỏi: Mark the letter A, B, C or D to indicate the sentence that best combines each pair of sentences in the following questions.
The coffee was not strong. It didn’t keep us awake.

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

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

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

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