题目内容：

词汇运用  根据中文提示，完成下列句子。

1.中国自从改革开放以来发展迅速。

China has                since the reform and opening-up.

2.一旦你有麻烦，请立即跟我联系。

Once you are in trouble, please              with me immediately.

3.我们国家给孩子们提供免费教科书。

Our country             children              free textbooks.

4.他昨晚故意很晚回家。

He went home late                last night.

5.请根据这篇文章来回答这些问题。

Please answer these questions                the passage.