If you want to ring back you have to ______.A.redial the telephoneB.know the free telepho

外语类 公共英语 已帮助 人

If you want to ring back, you have to ______.

A.redial the telephone

B.know the free telephone number to a computerized switch in another country

C.find another person to call you back

请帮忙给出正确答案和分析,谢谢!

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