We hear a lot about whales (鲸). _____ whales die every year. People kill them to use _____ oil. We need to protect （保护）them. You _____ whales in the sea in many parts of the world. Now "Whale-watching" is a tourist (旅游者) activity in some places. There are boats to take you to watch whales in nature. What _____ the whales feel about this? Well, they enjoy this. The whales swim very close to the boat-- sometimes _____ _close! They like getting close to people.