Tom has been a vegetarian ____principle for years .

Mycoat__________therebehindthedoor.Can’tyouseeit?

—Haveyoufinishedthework?

—Notyet,butnomatterhowharditis,we'llkeep___untilwemakeit.

Writing：

Astatementgoesthat“onlythroughmistakescantherebediscoveryorprogress”.Towhatdegreedoyouagreewiththisstatement?Writeanessayofabout400words.

Inthefirstpartofyouressayyoushouldstateclearlyyourmainargument,andinthesecondpartyoushouldsupportyourargumentwithappropriatedetails.Inthelastpartyoushouldbringwhatyouhavewrittentoanaturalconclusionormakeasummary.

Youshouldsupplyanappropriatetitleforyouressay.

Markswillbeawardedforcontent,organization,grammarandappropriateness.Failuretofollowtheaboveinstructionsmayresultinalossofmarks.

It’s necessary ______ us to keep our pets clean everyday.