____________ to the national park before, Sue was amazed to see the geyser.

Câu hỏi :

____________ to the national park before, Sue was amazed to see the geyser.

A Being not   

B Not having been

C Not being 

D Having not been

* Đáp án

B

* Hướng dẫn giải

Phương pháp giải:

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