Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions from 33 to 51.
I studied Spanish four years at high school. ___________, I had trouble with people I met when I was traveling in Spain.
A. On the other hand
B. Moreover
C. However
D. Therefore
Đáp án là C
Câu thứ nhất và câu thứ 2 mang 2 nghĩa đối lập nhau => ‘however‟ (tuy nhiên).