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zero, first and second conditionals
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When a bicycle _______ (SPEED) up, it _______ (BE) more difficult to stop.
speeds / is
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If you ________ (PRESS) the key, the display ________ (LIGHT) up.
press / lights
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If you put food in a fridge, it ________ (LAST) longer.
lasts
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Okay!
She gets nervous when she __________ (NOT HAVE) time to relax.
doesn't have
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When _________ (THERE BE) good programs on TV, I usually stay home.
there are
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If John ________ (FEEL) tired, he always ________ (WATCH) TV to relax.
feels / watches
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If someone ________ (ENTER) the building, the alarm _______ (GO) off.
enters / goes
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Okay!
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