语法填空
阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
We can always hear voices comparing the education systems in China and the US. It's true that        exist a lot of differences, but this cannot be an excuse  having a passive attitude toward studying in China.
When I came back from the US last year and continued my senior middle school education in China, I sensed many great differences.  I thought that school in China was too hard for   (we) students, and that we didn't get to do enough fun exercise except running around playgrounds together. My mom had a long talk with me. After that, I realized that though high school life in China is harder, it can give us  (much). The pressure helps us learn the true meaning of competition       we step into society. It gives us a strong heart and   (teach) us to step forward no matter what the  (real)is. It's like climbing a mountain. You might feel dizzy and nervous, but the top is always there   (wait) for you as long as you are strong enough一      (take) one more step.
We complain  (main) because we can't see the whole picture. We all need to understand that success takes efforts and tears.