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 took him three weeks _______ how to swim.

A. learn

B. learning

C. to learn

D. to learning

Đáp án
C. to learn

Câu hỏi thuộc Bài tập:

E9- Vào 10- Đề ôn 16