| A | B |
| Because moose drank so much water . . . | the water level began to drop. |
| Because the river water was so delicious . . . | thirsty animals drank from the river. |
| Because the river flowed peacefully . . . | many animals made their homes in the river. |
| Because moose was so big . . . | the ground shook beneath his feet. |
| Because moose was so loud . . . | birds flew away in fear. |
| When the water level began to drop . . . | the animals feared for their homes and safety. |
| Because fly was so small . . . | the other animals laughed at her. |
| Because fly was biting him . . . | moose became very angry. |
| Because fly was so small . . . | moose couldn't see her or fight back. |
| Because fly wanted moose to go away . . . | fly started biting moose. |
| Because moose had such huge feet . . . | he made holes in the river where he stomped. |
| Because moose made holes in the river . . . | the water now rushes noisily through rapids. |
| Because her bite hurt moose . . . | tiny fly was able to chase away big moose. |