Mark the letter A,B,C or D on your answer sheet to indicate the correct answer to each of the following questions
The US president Barack Obama …………….an official visit to Vietnam in May 2016, which is of great significance to the comprehensive bilateral partnership
A. delivered
B. paid
C. offered
D. gave
Đáp án là B.
Cụm “pay a visit to…”: đi thăm nơi nào đó