I ______ worry about my weekend—I always have my plans ready before it comes.
Light-to-moderate smokers were ________ to die of sudden heart problems than those who had never smoked.
A teacher’s ________ to education is worth great respect of the whole society because it brings benefits to the development of society.
Student loan is supposed to provide financial support for people who would ______ not be able to go to college.
It was ______ the president's speech that the secretary spent the whole morning at home.
“No student,” the headteacher stressed, “_______ go out of the school after ten o’clock at night without my permission.”