— On summer nights, the weather is usually hot at night in the south of China.— Yes, so I often go to sleep ______ the window ________.
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?