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

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

admin2013-01-10  13
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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专业英语四级

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