planets - They orbit the Sun in an elliptical path., galaxy - A huge collection of gas, dust and billions of stars and their solar systems, all held together by gravity., gravity - The force that attracts objects towards one another, especially the force that makes things fall to the ground., asteroids - Small, rocky objects that orbit the Sun. They are much smaller than the planets., atmosphere - The mixture of gases around the Earth or other celestial bodies, held in place by gravity. , because - The river is flooding ______of the heavy rainfall., people - The ______are listening to the man who is speaking., weather - I always wear gloves in cold _______., beautiful - There is a _________ lake behind the forest., interesting - I find this book very ___________.,

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