The theory of black holes in space__ (accept) by many serious scientists and astronomers.
更新时间:2024-11-16 01:54:55is accepted
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Ifyouhadbeeninbetterhealth,we___(allow)youtojointheminthework.
TheUnitedStatesisacountry_(advance)inscienceandtechnology
Expertshavefoundthatnormalsleepcanbedividedintofive______stages
Heblamedhispoorperformance_____jetlag
Itisessentialthateverythinginadvance.（）
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