2. 外语
  3. "How long ______ in the sun? You are working too hard!"

"How long ______ in the sun? You are working too hard!"

admin2010-02-17  20
问题 "How long ______ in the sun? You are working too hard!"
选项 A、have you sewn
B、did you sew
C、have you been sewing
D、are you sewing
答案C
解析
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