_______moreattention,theyoungtreescouldhavegrownmuchbetter.

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_______more attention, the young trees could have grown much better.

A. To give

B. Given

C. Give

D. Having given

参考答案:

B参考译文:倘若给予更多关注,这些小树本来可以长得更好。given表假设,常与虚拟语气连用。