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David wants to be engineer while Cathy wants to be doctor.A.an; theB.the; theC.t

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David wants to be engineer while Cathy wants to be doctor.A.an; theB.the; theC.t

David wants to be ________ engineer while Cathy wants to be ________ doctor.

A.an; theB.the; theC.the; aD.an; a

试题答案

D

解析试题