Direction: In the following questions, a sentence/part of the sentence is printed in bold. Below are given alternatives to the bold sentence/part of the sentence at (1), (2) and (3) which may improve the sentence. Choose the correct alternative. In case no improvement is needed, your answer is (4).
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Sincere workers do not rest till they have reached perfection in their work.
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- they had achieved
- they have achieved
- they having reached
- No improvement
Correct Option: B
Here, they have achieved (attained) is the right usage.
