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In real conditional sentences, we can often use either...

In real conditional sentences, we can often use either unless of if… not with a similar meaning. Choose a sentence with a wrong use of conditional clause.


A

Unless it rains, I’ll pick you up at 6.00.


B

Unless it will rain, I picked up an umbrella.


C

She cannot travel on this airplane unless she has a reservation.


D

If I don’t pass the exam, what will I do?


E

If I hadn’t written to him last year, he couldn’t have known all the truth.