Scientists often ______ new species in tropical forests., discover, discovers, discovering, is discover, The Earth ______ around the Sun., move, moves, moving, is move, These ancient objects ______ more than 2,000 years old., is, are, be, are be, Many students ______ online resources for their studies., uses, using, use, are use, This machine ______ a lot of energy., needing, is need, need, needs, Researchers usually ______ the results carefully., checks, check, are checking, checking, Many wild animals ______ in danger because of climate change., are, is, do, does, The museum ______ thousands of ancient objects., containing, is contain, contain, contains, This research centre ______ very famous in Europe., is, are, does, is do, Plants ______ sunlight to grow., need, needs, is needed, are need, The weather in this region ______ usually very dry., does, are, is, do, Our teacher often ______ documentaries about famous scientists., show, do show, shows, is show

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