---How much money does the package cost?---It cost 20 yuan , including two CD-ROMs and a guidebook.
This is _____ “r” and that’s _____ “u”.
-Dad, this is my friend, Dick.- ________.
-Your watch is very nice.- ________.
This is _____ eraser and that’s _____ gold(黄金) ring.
_______! Are you Mr. Green?