根据所给中文完成句子翻译（共5小题，每小题2分，满分10分） 你们是如何保持联系的呢?
How do you _______________________each other?现在我时而不时地会感到有点孤独.
Now I feel _________lonely _________________________. 我跟着他们跑,忍不住一直拍照片.
I ____________________them and ____________________..我爸爸去北京出差过两次.
My dad ______________________Beijing __________________twice. 我们花了三个半小时飞到香港.
It took us about ____________________hours _______________HongKong.
I'm not sure how I feel about that，with my birthday coming. （第十八）
So far，China has built nearly 600，000 cultural centers in . （村庄）
I promised Li Ming I would keep the secret to . （我自己）
Jack enjoys and sunbathing with his friends. （游泳）
There are many online libraries where you can read books for ________, such as the national Online libraries Library of China and Shanghai Library. （免费的）