Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Mr. Brown has kindly agreed to spare us some of his ______time to answer our questions.
A. valuable
B. worthy
C. costly
D. beneficial
Đáp án A
valuable: quý giá
worthy: đáng (nỗ lực cố gắng)
costly: đắt đỏ, chỉ giá cả
benificial: lợi ích, có lợi