问题
选择题
—______ you ever ______ with a group?
—Yes, I have.[ ]
A. Have; study
B. Have; studied
C. Do; study
D. Did; study
答案
答案：B
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—______ you ever ______ with a group?
—Yes, I have.[ ]
A. Have; study
B. Have; studied
C. Do; study
D. Did; study
答案：B