Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

Câu hỏi

It gets__________to understand what the professor has explained.

A. the more difficult

B. more difficult than

C. difficult more and more

D. more and more difficult

Đáp án
D. more and more difficult

Câu hỏi thuộc Bài tập:

E9- Vào 10- Đề ôn 17