Does Helen _______well? Yes, she ________beautifully.A. dance, dancesB. dance, danceC.dances, dances
You _______ walk across the road. It’s dangerous.
You’d better _______ too much meat. You are much too fat.
You should _______ the doctor’s advice and _______ the medicine on time.
_______ necessary for us _______ our environment clean and tidy.
She was afraid of __________SARS because it was dangerous.