---Will you please stay here for the party?---Sorry, I _____. I have to go to visit my grandfather in hospital.
- Is James at home?-- No, he Ya'an to be a volunteer.A. has gone to B. has been to C. is going to
— Nick, would you mind out of the bathroom?— Sorry. I won't be long.A. come B. to come C. coming
-- does your cousin go to the gym?-- Twice a week.A. How long B. How often C. How soon
-- Is that girl Susan?-- It ______ be her. She left for Beijing yesterday.A. needn't B. can't C. mustn't
— Mum, where are my socks?— Under your bed. You should your things.A. put on B. put down C. put away