Since entry into high school the students have been ________ staying up late in the evening and getting up early in the morning. 

It has been that some government leaders_____their authority and position to get illegal profits for themselves that resulted in the opposition in Tailand..

—Oh，my God! It’s a sea of bike，How Can you                your bike?—That’s easy．My brake went wrong , besides I tied a red ribbon to it.

After he graduated from college, he _______ his father’s business.

Jack, please do not _______ yourself in that matter, or you will be in great trouble.