Optional activity: Language Focus. Linking words: because, and, also, but, or. Put a right linking word: 1.These animals are orcas___ "killer whales". 2.An orca is not a whale,______ a type of dolphin. 3.They are aggressive___ they eat fish. 4.They are in danger___ there is a pollution in the sea. 5.They ____ die in fishing nets.​