Though the girl to learn Japanese, she couldn’t catch up with her classmates.
A. made effort
B. made an effort
C. took every effort
D. gave her efforts
网友回答
A. made effort
(答案→)B. made an effort
C. took every effort
D. gave her efforts
解析：本题考查动词短语的固定搭配。make an effort to do努力做某事，故选B。