问题
选择题
Chinese has become a popular language, and it _____ by people all over the world.[ ]
A. learns
B. learned
C. is learned
D. was learned
答案
答案：C
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Chinese has become a popular language, and it _____ by people all over the world.[ ]
A. learns
B. learned
C. is learned
D. was learned
答案：C