At night, we can see colorful lights on both ______ of the streets.
A. sides B. side C. side’s
-- The boy can speak both English and Japanese ______ he is only ten.
-- Wow, what a clever boy!
A. if B. because C. though
---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