When he suddenly ________ up the subject of genetic engineering, there was an embarrassedsilence.
A、tookB
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Othersarguethatsincetheearthhasenduredalongstringoficeagesinthelasttwomilliontothreemillionyears,anywarmingis________tobetemporary.
Hethoroughlyunderstoodthesociety__________.
ShegotajobasanassistantstagemanagerattheCambridgeArtsFestivalTheatre,thinkingthatitmight________toacareerasaplaywright(剧作家).
Theoppositionleaders________thegovernmentfornottakingactionsooner.
Ifyouwanttofindadecentlocationforyourownhome,________Mr.Smithforadvice.
