1 . 单句改错
1. It was just then when I began to worry about my safety
2. In a word, success is important, and so does failure, because it's the mother of success.
3. My dear friends, don't afraid of problems, but take advantage of them to be the best of ourselves.
4. There has a big library in our school.
5. That's all. Thank you. Some questions？

2 . “不要耗尽你所有的氧气！”她喊道，把我的头进一步伸进南瓜里，以便她能伸进去解开我的橡皮筋。（汉译英）

3 . “把这些带到妈妈的房间。”爸爸指示道。两人满怀期待地走出厨房。（汉译英）

4 . 如果在学习中遇到一些问题，要毫不犹豫地向老师请教。
Never________ turn to the teachers for advice if you meet with some problems in study.

5 . 永远不要抛弃你的老朋友，即使有一天你变得很富有。
Never ________ your old friends, even if you get wealthy some day.

6 . 你无论什么时候需要帮助，都尽管给我打电话。
Don't___________ whenever you need a helping hand.