Mark the letter A, B, C, or D on your...

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.
We ought to visit Granma. Otherwise, she will be worried about us.

A. Granma is worried about us, so we would visit her.

B. If we do not visit Granma soon, she will start to worry.

C. We need not visit Granma unless she is worried about us.

D. We should visit Granma in case she is worried about us.