Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
David still contact with many of his old school friends.
Đáp án đúng là: D
Giải thích
David still keeps contact with many of his old school friends.
Đáp án: D. keeps
Giải thích: "Keep contact with" là cụm động từ, có nghĩa là giữ liên lạc với ai đó.
