The sentence wants ____ once more.

A. explaining       B. to explain     C. being explained     D. explained  

The sentence wants ____ once more.

A. explaining       B. to explain     C. being explained     D. explained  

 The sentence wants ____ once more.

A. explaining       B. to explain     C. being explained     D. explained  

The sentence wants __________ once more.

　 A. to explain　　 B. explaining C. being explained　 D. to be explained it

The sentence wants _______ once more as many students still have difficulty understanding it.

   A. to explain               B. explaining             C. being explained       D. explained