摘要：Jim spent three years Chinese before he came to China. A.learned B.to learn C.learning D.learn
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Jim spent three years ________ Chinese before he came to China.
A. learned
B. learn
C. learning
D. to learn
查看习题详情和答案>>Jim spent three years ________ Chinese before he came to China.
A. learned
B. learn
C. learning
D. to learn
查看习题详情和答案>>Jim spent three years ________ Chinese before he came to China.
A. learned
B. learn
C. learning
D. learns
查看习题详情和答案>>