Wemust______thattheexperimentiscontrolledasrigidlyaspossible.
A、assureTostudyaforeignlanguage,__________.
Weregretto________thatitmaynotbepossibletodealwitheveryrequest.
Aftersomanydayswithoutrain,thegroundquickly________thelittlerainthatfelllastnight.
ShegotajobasanassistantstagemanagerattheCambridgeArtsFestivalTheatre,thinkingthatitmight________toacareerasaplaywright(剧作家).
Shehadclearlyno________ofdoinganywork,althoughshewasverywellpaid.
