Mike insisted that he ____ nothing wrong and ____ free.

—I am going to America.
—how long    you    there?

The last thirty years _____ the greatest number of laws stopping our rights and progress,until today we have reached a stage ____ we have almost no rights at all.

Ladies and gentlemen,please fasten your seat belts,the plane______.

Nowadays it is obvious that the Internet _______ our life rapidly.

The past two years ________ a sharp rise in oil price, which adds to the burden of auto transportation industry.   

---Do you know the timetable of the school bus?
---Sure, the first trip________ at 6:30 a.m. and usually continues until 4 p.m. on weekdays. 

—That must have been a terrifying experience.
—Yeah. I _____ in the damaged car, unable to move.

—Why do you look so worried?
—My Macbook Pro broke down and my paper _____unfinished since.

He ________ in American for five years, and now he works in Shanghai.