1) If you heat ice, it ---------. a) melt b) melts c) melted d) will melt 2) If you water the plants, they ----------. a) grow b) grew c) grows d) growing 3) If you press the red button, the robot ------------. a) not move b) don't move c) didn't move d) doesn't move 4) Iron ........ if it gets wet. a) rusted b) rusting c) rust d) rusts 5) When water .............., it starts to evaporate. a) boiling b) boils c) boiled d) boil

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