HE LOOKED ... WHEN HE HEARD HIS TEACHER TOLD HIM TO RETURN THE OLD...

16. - 3500 CAU TRAC NGHIEM ON TAP AV THCS
3500 CAU TRAC NGHIEM ON TAP AV THCS

16. He looked ... when he heard his teacher told him to return the old

lesson.

a. anxious

b. anxiously

c. with anxious

d. very anxiously

 a