题目内容
—______ did you become interested in playing chess?
—______ I was still a little boy, ______ the age of five years old, I began to learn it.
—______ I was still a little boy, ______ the age of five years old, I began to learn it.
[ ]
A. While, When, at
B. When, When, on
C. When, When, at
D. When, While, on
B. When, When, on
C. When, When, at
D. When, While, on
C
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