问题补充:
Though the girlto 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
答案:
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。