Jack described his father, who _____ a brave boy many years ago, as a strongwilled man.
Tom got addicted to chatting and playing e-games on the net, which made his father ________. Which of the following is not suitable?
With the final exam drawing near, everybody feels ____________ well prepared for it.
____________ all his hard work, he still failed to finish the task in time.
It is because he ___________ science that I __________ what he says.
Mr. Smith graduated from college at the age of 23, and ___________ he has been working as a teacher in a middle school.