——Where is Mr. Wang?   
——He together with his students ________ Zhuyuwan Park.

    My classmates talked about the winter camp. Everyone was happy except (除……之外) me. I didn't ____to go skiing (滑雪) at all. I wanted to stay at home but my parents asked me to go.

    When arriving at the camp our coach (教练) asked us to ski I thought I skied ____

than others but I still didn't do a good job. Ha, Ha! behind me，someone started ____

 I looked back ____who was laughing at me. To my surprise, I saw a girl. She did as ____as me. "I thought I'd be bad at this, but it seems ____than I expected!" she said.

    The next day I didn't want ____ skiing. But my coach chose me to be the first one to ski down the slope (斜坡).This time I ____I was flying and it was wonderful. After that I wasn't afraid anymore. And I didn't ____what other people thought of me. That day my coach said I skied the most beautifully of all.

    From this I learned that we should try our best ____every challenge (挑战).

美苏两极格局形成的根本原因是（　）

486﹣186=____ 250+250=____ 0.25×0.8=____ 4.2÷6=____

$\frac{1}{2}+\frac{1}{3}$ =____  $\frac{1}{3}-\frac{1}{5}$ =____ 24× $\frac{3}{8}$ =____ 21÷ $\frac{3}{7}$ =____