. In the past few years there ______ great changes in my hometown.
---Is this _______ bike? ---No. ________ is black.A. your; My B. your; Mine C. yours; Mine
---______ is the beef?----Sixty yuan a kilo. ______ would you like?
There ________ traffic jams in the air in the 2150s.
People often lose things when they are in _______ hurry.A. 不填 B. the C. a
---What can I do for you?---____________.