He is ______absorbed in his own thoughts that he seems unaware of what's going on in the room
A、soA
暂无解析
I'dliketoremindyouthatthereisno_____onthepartofsuspectstoanswerquestions.
Experts have found that normal sleep can be divided into five______stages
Manyothernewtechniquesarenowavailablethatenablemoreresearch___(do)inthetesttubetoseeifchemicalsproduceharmfulbiologicaleffects.
Thesadconditionofwomenworkingashouseservantsaroundtheworldreceivedmuchmedia_____earlythisyea
Decisionmakersmusthavesomewayofdeterminingofseveralalternativesisbest.（）
