19. a chance we will visit Edinburgh a second time.A. To be givenB. Given C. GivingD. Ha

问题补充：

19. a chance, we will visit Edinburgh a second time.

A. To be given

B. Given

C. Giving

D. Having given

答案：

A. To be given

(答案→)B. Given

C. Giving

D. Having given

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