-Did you have a good sleep last night?-Yes, never sleep ____.A. badly B. better . worse D. best
Professor Wu keeps __________ his students that the future __________ to the well-educated.
Being afraid of making mistakes, the little boy __________ answer his teacher's questions.
The president was so absorbed in his work that not a sound __________.
She is a bit shy and __________ stand up and answer the teacher's questions.
The little girl __________ go out alone at night.