问题
选择题
— you ever to Shanghai?
—Yes , but only once. [ ]
A. Have ; been
B. Are ; going
C. Have; gone
D. Did; go
答案
答案：A
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— you ever to Shanghai?
—Yes , but only once. [ ]
A. Have ; been
B. Are ; going
C. Have; gone
D. Did; go
答案：A