In the words unhappy and unusual,the "un" means _________.( )
A.veryB.mostC.notD.less
Ty to sing more English songs , and you will find it interesting _______ a foreign language.
We all need partners _______.
The river is too wide for the swimmers _______________.
I am happy with my old friends today.
The policeman asked us _____him send the old man to the hospital.