I ____ chopsticks for my mother.
A.thought B. bought C. caught
I want my mother sto buy a new bike ____ me.
A. to B.for C. by
_____ you have a nice trip to Beijing?
A.Do B.Are C. Did
live with ____ mother and father.
A.we B.us C. our
--What are you doing? ---- I am _____ a letter.
A.sending B. writing C.Both A and B