I've put an X next to the place where you should sign.
我已在你该签名的地方后面标示了X。
When I traveled to a foreign country, I was very aware that I was a Chinese.
当我出国旅行时,我非常明白自己是一名中国人!
I was doing some exercises on the high-and-low bars. When I landed, I fell forward and hurt myself. Someone was standing too close and I knocked into him and fell over onto my shoulder.