Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Despite modern medical technology, many diseases causing by viruses I are still not curable.

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.

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 whose underlined part differs from the other three in pronunciation in each of the following questions.

_____ the phone rang later that night did Anna remember the appointment.