You _____ be right, but I don’t think you are.
Although he is very young, he is much more experienced than others __ working ability.
Good use___ the natural resources to improve people’s life in this area.
A great number of students said they were forced to practice the piano .
—When shall we restart our business ?—Not until we our plan .
When changing lanes , a driver should use his turning signal to let other drivers know .