1) You won't succeed _______ you put in the effort. a) if b) unless 2) ... I'm not busy in the afternoon, I'll call you. a) unless b) if 3) ... you leave now, you'll be late for work. a) if b) unless 4) ... you book your tickets in advance, you won't get to see the concert. a) unless b) if 5) ... I wake up early on Saturday, I'll go shopping. a) if b) unless 6) ... you water the flowers regularly, they won't grow. a) if b) unless 7) ... it doesn't rain tomorrow, we will go on a picnic. a) if b) unless 8) ... he studies hard, he won't pass the exams. a) if b) unless 9) ... it rains in the afternoon, I will stay in and do some painting. a) if b) unless 10) Don't run ... you see a dog! a) if b) unless 11) ... I miss the bus, I ... (late) for school. a) unless b) if c) late d) will be late 12) ... you invite them, they ... (not come) to the party . a) if b) unless c) won't come d) don`t come

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