完形填空。Eva and Norman are both 80 years old.
They are1 to animals. In December, 2021, they went on a mountain near their house to look after poor birds. They 2 a bad snowstorm. On their way home, the heavy 3 stopped them. And it was terribly 4 . Eva thought they couldn't get home any more. She thought they could 5 because of the bad storm. They were in great 6 !
But 7 , their dog, Shana, was with them. Shana was only two years old, but she could understand people very well. When she found Eva didn't have a coat to keep 8 , she walked around to get a good idea. Then Shana 9 to dig(挖) under the snow. After some time, Shana dug a 20-foot-long tunnel(隧道) home.
At first, Eva and Norman didn't know what Shana wanted 10 to do. Shana walked into the tunnel, and then went 11 . She walked to Eva and bit(咬) her jacket to let her go 12 the tunnel.
After the snowstorm died down, the little dog took the two old to 13 all the way back to their home. Finally, they got to their house. They felt tired 14 they were safe.
How 15 the two- year- old dog was! How lucky the two old were!