MCQOPTIONS
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| 1. |
Afghanistan has historically be an difficult place for external invaders, thanks to its complex tribal equations and its rugged mountainous terrain. |
| A. | historic has a difficult place |
| B. | historically been a difficult place |
| C. | historically being a difficult place |
| D. | historically been a difficult places |
| E. | No correction required |
| Answer» C. historically being a difficult place | |