1 . I woke up by my dog barking in the early morning. I went outside to find a koala(考拉) at the yard gate wanting to enter. It was the first time that I had ___ a koala in my neighborhood. What a welcome ___!

I was wondering why he was here,   as koala ___ came down from the trees and didn’t like walking,   either. Then again,   there was ___ eucalyptus(桉树)around. Was he hungry or lost?   Or maybe the bushfire across Kangaroo Island __ him here?

He just sat there,   apparently ___ ,   and sort of looked at me with a look,   like helping me out of my suffering. At a(n) ___ look,   I discovered a long cut at his back with bloods,   ___ of attacks or cuts of something sharp in some other way.

I rushed into my room and came out with some iodophor(碘伏药水).   It was not a ___ problem as I was a nurse. This poor soul seemed to quite ____ my kindness when I ____ the cut with the liquid. It ____ me that he came to seek my ____!

After the treatment,   I watched the koala finally ____ in the wild,   hoping he was able to ____ the hard time and live his life as he should.

2 . The Smilodon and the Tiger

The smilodon (剑齿虎) died out probably about ten thousand years ago._______it is also known as the saber-toothed tiger, it was not a_______relative of the modern tiger. The more scientists_______the two big cats, the more_______they find.

Tigers are not_______animals. They generally travel by themselves. The smilodon, on the other hand, probably_______in groups. Tigers run fast while_______their prey (猎物). But the smilodon, with much_______tails than today’s tigers, did not have the balance to run at_______speeds. It probably caught its prey by________quietly until an animal came near. Then, the smilodon would________its prey.

Another main difference between today’s tiger and the smilodon is the size of the smilodon’s________. It is known as a saber-toothed cat________two huge teeth that grew from the top of its jaw (颌). These teeth grew up to nearly 18 cm long and were easily________and damaged. The smilodon probably used the teeth to bite into________parts of its prey’s body, such as its stomach. A modern tiger's teeth are much smaller, but they are________.

The smilodon lived in North and South America from about two million years ago until about ten thousand years ago. Tigers,________, still exist today and live in eastern and southeastern Asia. No one knows for sure why the smilodon________. However, scientists do know that many of today’s tiger species are in danger of________because of human activity. So it is important to________tigers and many other animals.

3 . From Facebook I got to know the Cajun Navy.And there,thousands of selfless volunteers piloted_______ into flooded areas,assisting emergency responders.So I download the app Zello And _______ the Cajun Navy channel.A couple of women who had been taking _______ from victims came on the line at 11:00 am and asked whether anyone could _______ through the night.I said,"I can.”

I got two-minute "training"and a"Good luck!".Then I began to answer calls.The first call was from Chad.He was _______in his house with water up to his chests.He was about to go to his attic（阁楼）．I told him to go to his roof _______,so he wouldn't become trapped by the rising water.

I took request after request.Around 4:30 am,I got a request from Saundra whose grandfather lived _______She was worried because without anyone around, he could not _______ to 911.I assured her that someone would get to him.

But later I learned the Cajun Navy had no boats on the water to help,with the flood so severe.It's no wonder that we had so many people desperately begging for rescue.It looked as if I'd been _______ Seven hours after the calls, we got word that the Cajun Navy was finally .________ to go onto the water.Every 30 minutes,I'd________ the rescuers of Saundra's grandfather.

At 3:00 pm,Saundra told me that her grandfather was on his way to a rescue center.I let out a huge sigh of ________ I texted Chad at 5:30 pm to see whether he was________I got his word“We are safe now".

I'd been awake for 20 hours but wasn't ________,There was no way I could have ________ right then.I didn't know how police officers, firefighters, 911 workers and EMT s did this every day, but I did know I was grateful beyond measures that they did it.

4 . Different things usually stand for different feelings.Red，for example，is the color of fire，heat，blood and life.People say red is an exciting and active color.They associate red with a strong feeling like_______．Red is used for signs of_______，such as STOP signs and fire engines.Orange is the bright，warm colors of_______in autumn.People say orange is a_______color.They associate orange with happiness.Yellow is the color of_______.People say it is a cheerful color.They associate yellow too，with happiness.Green is the cool color of grass in_______．People say it is a refreshing color.

In general，people_______two groups of colors：warm colors and cool colors.The warm colors are red，orange and_______.Where there are warm colors and a lot of light，people usually want to be_______．Those who like to be with________like red.The cool colors are________and blue.Where are these colors，people are usually worried.Some scientists say that time seems to________more slowly in a room with warm colors.They suggest that a warm color is a good________for a living room or a________.People who are having a rest or are eating do not want time to pass quickly.________colors are better for some offices if the people working there want time to pass quickly.