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 as your answer.
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The crop will fail, ______ it rains this week.
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- unless
- until
- till
- when
- unless
Correct Option: A
unless (Conj.) : used to talk about a situation that could happen in the future
until : up to the point in time or the event mentioned.
The sentence means —
If there is no rain this week, the crops will fail.
Here, unless is the right usage.