The use of computer aids in teaching,_____the role of teachers is still very important.

Alan _____ is an official document stating that you have passed an examination,completed a course, or achieved some necessary qualifications.

After feeling off_____for days, Tom finally went to see his doctor.

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Some high school students often_____helping the disadvantaged or handicapped children.

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.