Forthoseinvolved,thescandalhasbeenavery________(pain)experience
painful
暂无解析
Manyothernewtechniquesarenowavailablethatenablemoreresearch___(do)inthetesttubetoseeifchemicalsproduceharmfulbiologicaleffects.
thebossescannotdowithoutprofit,workershaveanedge.
Heblamedhispoorperformance_____jetlag
Don’tworry.Thisisthe________(desire)weightrangeforyouhealth
Expertshavefoundthatnormalsleepcanbedividedintofive______stages
