Fill in each blank with IF or UNLESS.  1. _____ we eat lunch now, we won't arrive at the cinema on time. 2. The teacher will be furious _____ you don't do the homework. 3. I won't eat kimchi when I go to Korea _____ I have to. 4. _____ you turn on the light, you will be able to see better. 5. You won't be able to find the house _____ you use your GPS. There's no one around.