Who can help me?短文填空

Who can help me?短文填空
Many people like dolphins.They are very _____ to people.They swim fast and jump very high.They can play _____ a ball.They can stand up and walk on water!If you fall into the water and can't swim,they may come up and _____ you.
Dolphins are whale-like mammals that live in water.The blow-holes in the top of their heads help the dolphins breathe.
Dolphins are _____ alive.How interesting!The mother dolphin is called a cow,and the baby dolphin is _____ a calf.
Dolphins can see,hear and taste,but do you believe that they can not smell things?Dolphins swim in groups called school.If a dolphin is ill,_____ will help it.
People like to _____ dolphins swim and play games.They can jump in the air.Some scientists _____ dolphins can talk to each other._____ some day we will learn to talk to dolphins.