|Directions for questions: A part of the sentence is underlined. Below are given alternatives to the underlined part at [A], [B], [C] which may improve the sentence. Choose the correct alternative. In case no improvement is required your answer is [D].|
B) have done
C) was doing
D) No improvement
Correct Answer: B
Solution :The correct alternative is have done. When two subjects are joined by (either-or), the verb agrees with the nearest subject.
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