Nan Hauser is a marine (海洋的) biologist. Last week, Hauser was ______ near her ship when she spotted that an enormous figure ______. It wasn’t long before Hauser ______ him—a humpback whale (座头鲸). ______ with such creatures, she was unafraid and planned to continue her leisure activity.

In the ______ of the animals, Hauser doesn’t touch her whale subjects ______ they’re ill or in danger. However, on that day, it was the whale who ______ contact. “Instead of swimming past, he didn’t ______ coming towards me until I was on his head...” she recalls. The whale rolled around and even pushed her several times. Hauser started losing her ______. Humpback whales aren’t dangerous animals, but any animal that big could ______ harm humans.

With efforts and experience, Hauser ______ to get away from the whale and out of the water finally. When she looked out to the distant water on her ship, a very ______ scene came into sight：miles away was swimming a huge tiger shark. Hauser ______ what was going on immediately. Far from making an ______ the whale was trying to rescue her.

“I’ve spent 28 years protecting whales, but never heard of such a thing. The experience makes me more ______ to be a guardian,” Hauser says.

Growing up, Elizabeth’s grandmother always told her to look for ways to help others. Her grandmother has passed away, but Elizabeth keeps her grandmother’s _______ close to her heart.

One day, she was shopping at a supermarket when she _______ something unusual. Silver-haired Carmen was still working hard at age 82. A quick conversation _______ why Carmen continued to work into her Golden Years. She owed about $10,000 in medical _______ and she only had about $50 in her bank account then.

Elizabeth was _______ and tried to help Carmen. Since she is active on social media and has over 135,000 followers, she decided to ask the public for _______ to pay Carmen’s debt and set her up to retire sooner. She made a short video of the _______ grandma and opened an account to raise money. Elizabeth’s original video was _______ more than 15 million times. A quick follow-up video got even more attention, and the donations started pouring in.

So far, Elizabeth has _______ over $135,000! She was amazed by how ________ the public was, but thought Carmen’s story really struck the ________ of people of all ages. The outpouring of support also ________ her of how good most people are at their hearts.

When Elizabeth told Carmen the good news, she couldn’t believe her ________. Thanks to Elizabeth and her followers, Carmen will finally be able to ________ and spend more time with her family. Isn’t it amazing what we can achieve when we ________ pay attention and look for ways to help others? We’re certain that Elizabeth’s grandma would be proud of her.