题目内容
Mr Walson ________ to America 20 years ago and has been here ________.
A. has gone; since then
B. went; since ever
C. has gone; since ever
D. came; ever since
答案：D
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题目内容
Mr Walson ________ to America 20 years ago and has been here ________.
A. has gone; since then
B. went; since ever
C. has gone; since ever
D. came; ever since