She expects ________ back on Sunday.A. coming B. to come C. to coming
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.