因为天气恶劣，所有的航班都被取消了。
All flights have _______ ________ because of the bad weather.
毫无疑问电脑使世界变得更小更近了。
There is _______ _______ that computers make the world smaller and nearer.
在店里工作的那个女孩是店主的妹妹。
The girl ______ _______ in the shop is the sister of shopkeeper.
请告诉我这场事故是怎么发生的？
Please tell me how the accident _______ ________.
我借这本书已经有两个周了。
I_______ ________the book for two weeks.