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

Not ................ another language might be the biggest mistake you ever make.

A. learning

B. to be learnt

C. learn

D. being learnt

Đáp án
A. learning

Câu hỏi thuộc Bài tập:

TN-PART1-20KEY