Mr. Wang, who _____ in this city ever since thirty years ago, _____ a report for the last two years.
He has been fired and will have to over charge of his office tomorrow.
It is fashionable to drive a car, but to drive a car is not nearly as difficult as it is imagined on condition that you ________ the specialized rules.
Peter has many friends;_________can help him.
It was in the mid-1980s that cartoons began to take off in China,_________there were only pictured-story books.
He likes to use words _________ is clear to her.