1) If it ... (rain), the ground ...(to be) wet. a) rains b) rain c) is d) are 2) The river ... (freeze) if it ... (to be) cold. a) freeze b) freezes c) is d) does 3) The flowers ... (die) if you (not water) them.  a) die b) don`t die c) waters d) don't water 4) If you ... (heat) water, it ... (boil). a) heat b) heats c) boil d) boils 5) If you ... (touch) a hot kettle, you ... (burn) your hand. a) touch b) touches c) burn d) burns 6) If you ... (mix) red and yellow, you ... (get) orange a) mixes b) mix c) gets d) get 7) If he ... ( not water) this plant, it ... (die). a) don`t water b) doesn`t water c) dies d) die 8) Ice ... (melt) if you ... (hold) it in your hand. a) melt b) melts c) hold d) holds 9) The ground ... (get) wet if it ...(rain). a) gets b) get c) rain d) rains 10) Ice-cream ... (melt) if you ... (heat) it. a) melt b) melts c) heat d) heats 11) If you ... (mix) blue and yellow, you ... (get) green.  a) mix b) mixes c) gets d) get 12) If Sue ... (not wear) a cap, he ... (get) sunstroke. a) don`t wear b) doesn`t wear c) gets d) get

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