– Hi, John, I have not seen you for a long time. What recently? – Carrying on some research on wildlife. A. have you been doing B. have you done C. were you doing D. did you do 【查看更多】
题目列表(包括答案和解析)
—Hi, John, I have not seen you for a long time. What _______ recently? —Carrying on some research on wildlife.
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A. have you been doing B. have you done C. were you doing D. did you do
