–What does your friend look like?–She is of medium build, and she has _______ hair.

 —_____is your mother ? —A nurse. She works in a hospital. 

—Who broke the window yesterday?—___ Jack ___ Mike. It was Jim.

–_______________ does a CRH train run? –It runs up to more than 300 km an hour. 

 _________you don’t give up(放弃)，your dreams will come true.