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- Relation between the two countries are in strain due to the border dispute.
Question 1:
Relation between the two countries are in strain due to the border dispute. A. are on strain
B. are on a strain
C. have a strain
D. have been strained
Feedback The sentence suggests that the action has taken place over a period of time. In such cases, the use of present perfect tense is most appropriate. 'relations have been strained'.
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