题目内容：

根据句意和汉语注释，写出单词的正确形式。

1.There is a _________ （直达的）high-speed train to Hangzhou.

2.I am looking forward to visiting __________（欧洲）this summary holiday.

3.The meeting has been ________________ (结束) for 10 minutes.

4.Most of us can’t live without the Internet because it has made _______ (交流) much easier.