Direction: In the following questions, sentences are given with blanks to be filled in with an appropriate word(s). Four alternatives are suggested for each question. Choose the correct alternative out of the four.
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Ramu is in the habit of revising just once, but Suresh never understands a subject ____ he revises it for at least three times.
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- in case
- thus
- although
- unless
- in case
Correct Option: D
unless (Conj.) : except under the circumstances that; used for saying that something can only happen or be true in particular circumstances
Here, unless is the right usage.
