1Forestscanhelppreve的精選

問題詳情：用括號內所給單詞的適當形式填空。1.Forestscanhelppreventwaterfrom________(run)away，sodroughtdoesn'toftenhappeninthisarea.2.Therearemany________(wolf)inthezoo.3.Scientistsdidn'tfindanything____...