Mr. Lee, who ________ as a carpenter for over 10 years, is now a very famous statesman in this country.
Between two rows of trees _____ the teaching building.
The number of people invited ______ fifty, but a number of them ____ absent for different reasons.
You, who ______ his good friend, should help him get out of trouble.
More than one student _________ read the novels, which _________ written by David.
The boy, rather than his friends, _________ for the accident.