1.Theteacher’sexplanationhasclarified(阐明) thepuzzlingprobleminthelastlesson.
2.Weaccomplished(完成) thisdifficulttaskaheadoftime.
3.Thethreecountriesfoundthemselvesunited(统一) peacefullyinsteadofbywar.
4.Wespentthedayssightseeing(观光) andtheeveningssittinginthebarsdrinkingthelocalwine.
5.Theywerealsoinconstant(时常发生的) communicationwithpeopleontheearth.
6.Hehasnoprevious(早先的) experienceofthiskindofwork.
7.Shehadastressfuljobasasalesrepresentative(代表).
8.Sheswitched(转换) ontheTVsetassoonasshearrivedhome.
9.You’dbettermakesomeadjustments(调整) beforehandinginyourpaper.
10.They’reworkinghardtoturnwasteintousefulmaterials(材料).