－Did you receive my letter?－I received one just as I A. set outB. had set outC. was settin

问题补充：

－Did you receive my letter?

－I received one just as I

A. set out

B. had set out

C. was setting out

D. would set out

答案：

A. set out

B. had set out

(答案→)C. was setting out

D. would set out

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