So tired ___ after a whole day’s heavy work that I _____stand on my feet.

It was reported yesterday that an official in the department of health was arrested for his________his power to get benefit for his relatives.[ ]

At first he did not realize that he had succeeded in making a computer that ran on solar power(太阳能). “Realize” in the sentence means “___________”

Students expect ______ more leisure time during their school hours.

As _________ teacher, you must believe that you can make ______ difference to the lives of your students.