While （） an enquiry, you ought to enquire into quality specification and price etc.A、makingB、offeringC、sendingD、giving

题目

While （） an enquiry, you ought to enquire into quality specification and price etc.

  • A、making
  • B、offering
  • C、sending
  • D、giving
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参考答案和解析
正确答案:A
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