Do you know the difference between "IF" and "WHETHER"?
Complete the sentences using “if” or “whether”. In some cases, they are both possible.

QUESTIONS
00:00 - Introduction
00:16 - I’m not sure ______ I’ll be able to come.
00:45 - He asked us ______ we were married.
01:15 - ______ I don't leave now I'll miss the last bus.
01:43 - ______ he is aware of the fact doesn’t matter.
02:11 - Do you know ______ they’re coming with us?
02:37 - I don’t know ______ to paint the walls yellow or blue.
03:06 - ______ the weather doesn’t improve, we won’t go for a picnic.
03:33 - I would like to talk about ______ you are moving to Scotland.
04:02 - Can you tell me ______ or not you are planning a trip to France?
04:33 - I’m unsure ______ she accepted the offer.
05:03 - ______ they will agree isn’t yet certain.
05:33 - ______ you stay or leave is not my concern.
05:56 - They are always concerned about ______ we are safe from attack.
06:26 - You wouldn't have been late for the exam ______ you had left earlier.

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